Mining Equipment and Electromechanics. N. 1-2017

A. M. Krasuk, Professor, Chief Researcher, e-mail: krasuk@cn.ru, E. Yu. Russky, Senior Researcher, e-mail: geomining@mail.ru,
N. A. Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk,
V. I. Kutaev, Senior Technical Advisor to CEO, e-mail: kutaev@ventprom.com, I. V. Gorshkov, Deputy CEO,
Artemovskij Machine-Building Plant "VENTPROM", ÀÎ, Artemovski, Sverdlovsk region, Russia

Development and Research of Blade Impeller Strength with Cell Core Structure for Axial Mine Fans

Speed of rotation of the main airing impeller is limited to durability of shovels which experience considerable centrifugal strain. Decrease in centrifugal forces can be reached due to reduction of mass of working shovels. The way of decrease in mass of a shovel due to performance of her core in the form of cellular structure is offered. Results of research of tension on the example of a impeller shovel for the VOD-40 axial fan executed from an aluminum alloy are given. Calculations have shown that the shovel design with core cellular structure allows to increase the speed of rotor rotation by 1.8 times, therefore, in as much time fan productivity will increase. Thus it is possible to manufacture fans with higher productivity without increasing car dimensions.
Keywords: axial fans, impeller shovel, tension, durability, core cellular structure

P. 3–6

To the contents N. 1

A. A. Veprikov, Postgraduate Student, e-mail: veprikov.aspirant@yandex.ru,
B. N. Abramovich, Professor, e-mail: babramov2bn@mail.ru,
Yu. A. Sychev, Associate Professor, e-mail: sychev_yura@mail.ru,
National Mineral Resources University (University of Mines), Saint Petersburg, Russia

Enhancing the Efficiency of Electrical Converters for Mining and Processing of Mineral Resources

Here were considered the basic directions of structure improvements and converter operation modes for mining and mineral processing. Also this paper presented some measures to ensure the electromagnetic compatibility of power converter equipment and power grid along with the electric energy quality improvement for the rectifier systems. This shows the necessity of using active voltage control devices and on-load-tap-changers in electric power systems for mining facilities. In conclusion few ways to optimize the operation mode of converter units have been described according to the criteria of minimizing overcurrent value and semiconductors number.
Keywords: power quality, power factor, electrotechnical, system, converter

P. 7–12

To the contents N. 1

D. N. Pelenev, Postgraduate Student, e-mail: d.pelenev@mail.ru,
B. N. Abramovich, Professor, e-mail: babramov2bn@mail.ru,
Yu. A. Sychev, Associate Professor, e-mail: sychev_yura@mail.ru,
National Mineral Resources University (University of Mines), Saint Petersburg, Russia
Automatic Correction System of Selectivity Action Protection Against Single-Phase Earth Fault of Enterprises Mineral Complex
Today current protection against single-phase short circuits in electric networks 6—35 kV of the mountain entities work for the earth not selectively that leads to unjustified shutdowns and idle times of electric equipment. The reason for that presence of transitional resistance in a contour of the zero sequence which lowers sensitivity of protection. The purpose work is increase in efficiency of action protection against single-phase short circuits on the earth in the conditions of inconstancy parameters of a contour current the zero sequence.
The main objectives of this work were development of structure system automatic increase in selectivity of action protection and justification her working capacity in the conditions of big transitional resistance in the place of short circuit on the earth. The algorithm of action the offered system provides assessment of size transitional resistance and the subsequent automatic correction of a signal current the zero sequence taking into account incompleteness of short circuit on the earth. It allows to increase sensitivity and selectivity of action protection. Check operability an algorithm of action was carried out by means of computer modeling in the environment MatLab Simulink.
Results of the carried-out tests the offered system have confirmed high stability of reliable functioning of protection against single-phase short circuits on the earth regardless the size of transitional resistance in the place short circuit.
Use developed system of automatic correction selective action of the protection against single-phase short circuits on the earth which is reliably functioning in case different types of short circuit allows to minimize damages because of availability single-phase short circuits in distribution networks 6—35 kV of the mountain entities.
Keywords: single-phase ground short circuit, contact resistance, coefficient of incompleteness the ground fault, the algo­rithm correction of selectivity action, modeling of the process circuit

P. 12–16

To the contents N. 1

V. V. Reginya, Chief of Mechanical Transmission Design Office, e-mail: kbst@belaz.minsk.by,
OJSC "BELAZ" — Management Company of Holding "BELAZ-HOLDING", Zhodino, Republic of Belarus

Diagnostics of Hydromechanical Transmission Technical State During Testing of BelAZ Mining Dump Trucks with Mechatronic Control System

Hydromechanical transmission technical state diagnostic technique trough testing of BelAZ mining dump truck with mechatronic automatic control system is proposed.
Keywords: hydromechanical transmission, mining dump truck, mechatronic automatic control and diagnosis system, torque converter, testing

P. 17–23

To the contents N. 1

À. S. Romanovich, Director General, e-mail: info@niva.by, UPE "NIVA", Soligorsk, Republic of Belarus

The Optimum Ratio of Wear Resistance of Holder and Insert of an Energy Efficient Tangential Pick

The results of the evaluation of abrasive wear resistance of a number of applied and new materials used for the manufacture of energy-efficient insert and holder of a tangential cutter of salt-mining combines are introduced. The optimal ratio of wear-resistance of materials of the insert to the pick holder used to reduce power consumption on rock cutting by è 40% has been evaluated.
Keywords: tangential pick, potash ore, energy efficiency, cutting insert, pick holder, wear resistance, abrasion, cutting force, optimum ratio

P. 24–29

To the contents N. 1

E. A. Kalentev, Research Associate, e-mail: EugeneKalentev@gmail.com,
Institute of Mechanics Ural Branch of Russian Academy of Sciences, Izhevsk, Russia

Bending Stresses in the Wire Rope Bend around Blocks

The work carried out numerical analysis of the stress-strain state of the rope when rounding the block based on the finite element method. Unlike other approaches to solving this problem, in this model is taken into account the effect of the frictional forces between the wires inside the rope, as well as between the wires and the block. The comparison of the results with those of other authors.
Keywords: wire rope, numerical analysis, bending, block, pulley

P. 29–33

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S. S. Iljina, Associate Professor, S. R. Iljin, Associate Professor, e-mail: iljin_sr@mail.ru, National Mining University, Dnipro, Ukraine

Problems of Operating Systems "Rope—Lining" Multiple-Silo with Gooseneck Rejected and the Idler

The article posed and solved the problem of investigating the influence of variations of radii gutters multirope pulleys mine hoisting installations monobloc leading and diverting pulleys on the distribution of load between the ropes in the string and pitches head ropes for mine hoisting installations.
Keywords: multiple-shaft elevator installation, tension rope deflection, deflection length cables, multiple-drive pulley, multiple-diverting pulley

P. 34–41

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Mining Equipment and Electromechanics. N. 2-2017

N. M. Suslov, Professor, e-mail: gmf.gmk@ursmu.ru, Ural State Mining University, Ekaterinburg, Russia

Directions Efficiency Pacing Dragline Excavator

Presents the features of the three-point hydraulic equipment, walking dragline excavator, the breadth of its application due to its main advantages: ease of implementation of large loads and the ability to control the speed of movement of the excavator, which is important when driving on clay soils with low bearing capacity. Showing the shortcomings identified in the operation of pacing mechanisms that reduce the efficiency of their use. Proposed technical solution to reduce the load on the base at the edge of pacing, to increase the stride length and movement speed, eliminate excessive rise of the center of mass of the excavator and get significant movement on energy savings. Placing traction hydraulic cylinders on the support shoes greatly simplifies the metal structure of the body of the excavator and reduces the weight of the movable excavator. Implementation of these proposals will significantly improve the efficiency of walking navigating equipment with hydraulic drive.
Keywords: excavator, walking running gear, gidrotsi-Lindrom lift and thrust bearing shoes, the support base, clay soil

P. 3–6

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A. P. Komissarov¹, Professor, Yu. A. Lagunova¹, Professor, e-mail: yu.lagunova@mail.ru, O. A. Lukashuk², Associate Professor, I. V. Teliman¹, Postgraduate Student
¹Ural State Mining University, Ekaterinburg, Russia
²Ural Federal University named after the first Russian President Boris Yeltsin, Ekaterinburg, Russia

Rationale for the Working Characteristics Mining Shovel

The method study of the performance of career electromechanical (mehlopat) and hydraulic excavators based on simulation models workflow excavators. It is shown that the form of the performance of the excavator career depends on the type of work equipment. The performance will assess the impact of mining-specific operating conditions on the efficiency of operation of the excavator.
Keywords: shovels, operational parameters of the main machinery, the operating characteristics

P. 7–10

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V. L. Yakovlev, Corresponding member of RAS, Chief Researcher, e-mail: yakovlev@igduran.ru, A. G. Juravlev, Laboratory Chief, e-mail: juravlev@igduran.ru, Yu. A. Bakhturin, Leading Researcher, e-mail: bakh2008@yandex.ru, V. A. Cherepanov, Research Associate, e-mail: transport@igduran.ru, Mining Institute of the Ural Branch of the Russian Academy of Science, Ekaterinburg, Russia

Special Aspects of the Solution of Transport Problems at the Modern Stage of Development of the Mining Industry

The article presents the modern state of the quarry transport, including the dynamics of quantitative indicators. There is presented, that one of the key trends is the increase of truck transportation when the systematic increasing of medium-duty dump trucks simultaneously, and this when the maximum capacity of production vehicles has reached 450 tons. Time-tested schemes of combined transport (road-rail, road-pipeline) will remain at the existing and applied to new large mining enterprises. When embedded in the inviolability of the basic theory of the formation of the existing transport systems quarries (TSC) principles have been significant changes in the factors that affect their development. In this regard, it requires the development of both theoretical and applied methodological approaches. The article gives some direction this development associated with the widespread use of computer modeling and calculation, linked with modern trends in the development of quarry transport. Requirements to improve the normative-technical framework of mineral development, which touch on a question of quarry transport, are formulated.
Keywords: quarry transport, open pit transport, development trends, modern stage, requirements for a quarry transport, factors

P. 11–18

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A. P. Komissarov, Professor, e-mail: anatoliy.komissarov@m.ursmu.ru, G. V. Prokopovich, S. S. Glazyrin, Postgraduate Student, Ural State Mining University, Ekaterinburg, Russia

Adaptation of Structures Drilling Machine Percussion to Operating Conditions

The effect of operating conditions (physical and mechanical properties of rocks) on the performance workflow percussion drilling machines. The concept of the settlement (of the project) the stiffness of the shock rock. A method for adapting the drill machine designs to changing physical and mechanical properties of rocks, providing a predetermined drilling mode.
Keywords: drilling machines, percussion, physical and mechanical properties of rocks, design (design) impact stiffness breed, adapting the design of the drilling machine

P. 19–22

To the contents N. 2

A. E. Kalyanov, Postgraduate Student, Yu. A. Lagunova, Professor, e-mail: yu.lagunova@mail.ru, V. S. Shestakov, Professor,
Ural State Mining University, Ekaterinburg, Russia

A Design of Motion of the Uncrushed Body is in Chamber of Crushing of Cone Crusher

In the article the variant of possible decline of wear is considered by the armour of cone crushers due to the exception of lockwiring of the uncrushed body in the chamber of crushing. For providing of admission of the uncrushed body through the chamber of crusher it offers to fix a supporting ring in heaved up position. Fixing is provided by hydrocylinders with hydraulic accumulators and control system after the rejection of supporting ring a movable cone through the uncrushed body.
For realization of researches on possibility of passing of the uncrushed bodies of different sizes a mathematical model is worked out. A model includes the blocks of motion of the uncrushed body, motion of movable cone, supporting ring and elements related to it. A model is realized as a program in algorithmic language, the results of calculations in a table form and as charts. Calculations are conducted at passing through the chamber of crushing of the uncrushed bodies from 10 to 85 mm. As a result of researches is well-proven, that during fixing of supporting ring of does not take place the offered method of lockwiring of the uncrushed bodies.
Keywords: cone crusher, uncrushed body, armour, deformation, model, researches

P. 23–29

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Yu. N. Kamanin, Associate Professor, e-mail: kamanchi22@mail.ru,
R. A. Redelin, Associate Professor, e-mail: rusland57@yandex.ru, V. A. Kravchenko, Associate Professor, Orel State University named after I. S. Turgenev, Orel, Russia

Simulation of Fracture Rock Hydraulic Equipment of Percussion

The most effective and high power means breaking rocks off the array is a drilling and blasting method. However, it has a number off negative/actors: environmental pollution, increased seismic hazard (for nearby buildings and industrial facilities and settlements), heterogeneous structure separated from the rock mass (the needfor secondary crushing oversized), a common danger of blasting and other alternative means. destruction of strong mineral media is a way to shock, realized powerful hydraulic hammers (hammers), get under the big distribution. At the same time, the scope of hydraulic hammers and rational modes of operation remain poorly understood, particularly with regard to the conditions of the development of rock and fractured natural and artificial building materials.
In this work, the task of developing a mathematical model has been resolved, allowing a comprehensive study the process of loading of solid mineral medium shock load.
Keywords: minerals, mining, stone materials, hydraulic hammer, destruction, stress, finite element method, mathematical model, crack

P. 30–34

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A. A. Mitusov, Associate Professor, O. S. Reshetnikova, Senior Lecturer, e-mail: olga.reshetnikova.80@mail.ru, Karaganda State Technical University, Karaganda, Kazakhstan, Yu. A. Lagunova, Professor, e-mail: yu.lagunova@mail.ru, Ural State Mining University, Ekaterinburg, Russia

Study of the Disclosure Two-Line Valve in the Gradation of the Working Stroke of the Striker Hammer

The article investigates the process of opening two-line valve in the phase of the working stroke of the striker hammer UGDS-0.3 in order to determine its performance with selected circuitry and structural design. Are considered modes of the breaker, resulting in incomplete and full disclosure of the flow cross section of the distributor.

Keywords: hammer, hammer hydraulic motor, the energy of the impact, the striker hammer stroke

P. 34–39

To the contents N. 2

Mining Equipment and Electromechanics. N. 3-2017

D. A. Yungmeyster, Professor, e-mail: iungmeister@yandex.ru, A. I. Yacheykin, Student, e-mail: a.krup53@mail.ru,
National Mineral Resources University (University of Mines), Saint Petersburg, Russia

Modernization of Executive Device of the Tunnel-Boring Mechanized Herrenknecht S-782 Complex

The article deals with the problem of building Saint Petersburg metro associated with unsuitability tunnel boring technology to the complex geological conditions of the city. The difficulties arising from the work of the mechanized complex Tunnel Herrenknecht S-782 and solutions. Calculations effort on the incisors and cutters, as well as the determined value of the required torque on the shaft of the executive body. Graphically shows the dependence of the torque on the shaft of the executive body of the contact strength of the breed. An improved, balanced placement scheme rock cutting tool. executive body of the proposed modernization will reduce the likelihood of accidental failure of the rock cutting tool, which will increase the rate of penetration of the tunnel.
Keywords: tunnel-boring complex, rotor executive device, sandstone inclusions, scheme of arrangement of rolling cutter

To the contents N. 3

A. Yu. Cheban, Senior Researcher, e-mail: chebanay@mail.ru,
Mining Institute of the Far Eastern Branch of the Russian Academy of Sciences, Khabarovsk, Russia

Production Complex for Open-Cast Mining of Solid Minerals

Cyclic-flow of solid minerals mining techniques provide relatively high performance open mining operations and reduce the cost of the resulting products as compared with cyclic technologies. The paper proposes a design scheme of the mining complex provides a recess, classification, primary crushing and loading of the blasted rock mass with the transformation of the cyclic nature of the cavity in a continuous process of loading on the conveyor belt. Application of mining complex will reduce the amount of equipment and personnel in the mine in the management of excavation and loading operations and increase profitability of the mining industry.
Keywords: cyclic-flow technology, excavation, loading, excavator, crushing plant, conveyor system

To the contents N. 3

A. V. Glebov, Deputy Director for Scientific Affairs, e-mail: glebov@igduran.ru,
A. V. Semenkin, Junior Researcher, Postgraduate Student, e-mail: a.semenkin92@mail.ru,
G. D. Karmaev, Senior Researcher, V. A. Bersenev, Senior Researcher,
Mining Institute of the Ural Branch of the Russian Academy of Science, Ekaterinburg, Russia

Effectiveness of Use of the Cyclic-Flow-Line Technologies in the Development of Aktogay Copper Mine

A summary about the Aktogaysky deposit is provided in this article. The flow diagrams of formation of crushing and conveyor complexes on boards of the Aktogay pit offered by authors are given. The change of criterions for evaluation of effectiveness, such as: relative, discounted, specific, investment and maintenance costs, assignments for a pollution of the atmosphere, specific metal consumption and power saturation, labor productivity — is explored. An effectiveness of use of the cyclic-flow-line technology in comparison with use of the excavator and automobile complex in the conditions of the field Aktogay — is proved in the article.
Keywords: cyclic-flow-line technology, excavator and truck complexes, crushing-reloading station, Aktogaydeposit, criterions for evaluation of effectiveness of use of cyclic-flow-line technology

P. 12–16

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À. S. Gromadskyi, Head of Chair, e-mail: impulselux@yandex.ru, Vlad. À. Gromadskyi, Associate Professor, Vik. À. Gromadskyi, Assistant, Kryvyi Roh National University, Kryvyi Roh, Ukraine

Development and Optimization of the Parameters of the Transverse Vibrations Damper of the Rotary Drilling Rig Drilling Rod

This article is intended for a wide range of engineers, scientists and graduate students involved in the development of systems of vibration damping transverse drilling rod machine roller cone drill. The article describes the design and operating principle described damper transverse vibrations drilling rod, given the method of optimization to optimize the shock absorber settings. The optimal values of the parameters of the shock absorber can be obtained by minimizing the corresponding functional. Dana formula of the functional and the results of the optimization parameters of the shock absorber. As a result of the optimization parameters is established that the shock absorber to reduce vibrations in the drilling rod 6 times. The absolute value of the maximum vibration drilling rod is mm. However, this amplitude is almost 1,8 times higher than the limit of the gap between the well wall and the outer surface of the drilling rod. Therefore it recommended the use of the shock absorbers in combination with the method of liquidation flatterer drilling tools roller cone drilling machine according to the patent of Ukraine for invention number 107309. Oblast application — development and manufacture of machine tools for drilling wells in quarries.
Keywords: rotary drilling rig, drilling rod, transverse vibration damper, parameters optimazation

P. 17–19

To the contents N. 3

I. I. Mishin, Postgraduate Student, e-mail: mishin-i-i@yandex.ru, V. I. Bolobov, Professor, e-mail: boloboff@mail.ru, S. A. Chupin, Assistant, e-mail: Stanislavchupin88@gmail.com, V. S. Bochkov, Assistant, e-mail: bochkof@list.ru, National Mineral Resources University (University of Mines), Saint Petersburg, Russia

Increasing of the Wear Resistance of Materials of Wearing Elements of Ore Dressing Equipment by Thermomechanical Treatment

Analyzed patterns of abrasive wear of steel 110G13L (Hadfield steel) as the main material of wearing elements of crushing and milling facilities — beaters, hammers, liners, etc. of crushers and mills, and possible ways to improve its durability. We describe a technique developed by the authors of high-temperature deformation of steel forging on a hydraulic forge hammer and experiments on samples of abrasion. Presentation of the test results showed that the hardness and wear resistance of manganese steels depend on the intensity of plastic deformation prior to harding, increasing its magnification. For maximum reached intensity plastic deformation increase the wear resistance of steel compared with the non-deformed steel reaches 70 %. We present dependence of the wear resistance of the steel hardness values HB, achieved as a result of plastic deformation. The authors conclude that the service life of wearing components of mining equipment can significantly increase the production of these elements hot forming and subsequent quenching.
Keywords: Hadfield steel, abrasion, hardness, high-temperature plastic deformation hardening, wear resistance, effective plastic strain

P. 20–23

To the contents N. 3

D. N. Pelenev, Postgraduate Student, e-mail: d.pelenev@mail.ru, K. V. Babyr’, Student, e-mail: 77kir09@bk.ru,
National Mineral Resources University (University of Mines), Saint Petersburg,
V. V. Babyr', Chief Power Engineer, Coalmine "Polosukhinskaya" JSC, Novokuznetsk, Russia

Increase in Sensitivity of Protection against Single-Phase Short Circuits to Earth Electric Networks of the Coal Entities

Distribution networks of 6...10 kV of the coal entities are characterized by high heterogeneity of a configuration that determines complexity of the organization of effective protection against single-phase short circuits on the earth. The purpose of this work increase in sensitivity of protection against short circuits came down to earth by the choice of an installation site of dividing transformers. Based on analytical researches it was established that use of dividing transformers on lines with big own capacitor current of short circuit on the earth will allow to increase sensitivity of action protection against single-phase short circuits on the earth. For the purpose of ensuring steady functioning of protection in the conditions incompleteness of short circuit of a phase electric network on the earth it is offered to use invariant current protection against short circuits on the earth allowing to perform assessment of size transitional resistance in the place of damage and the subsequent automatic correction of input parameters of protection taking into account incompleteness of short circuit.
Keywords: electric network, single-phase short circuit on the earth, sensitivity coefficient, the dividing transformer, invariant protection

To the contents N. 3

À. B. Zhabin, Professor, e-mail: zhabin.tula@mail.ru, I. M. Lavit, Professor, e-mail: igorlavit@yandex.ru, P. N. Chebotarev, Assistant, e-mail: cheb-84@mail.ru, An. V. Polyakov, Professor, e-mail: polyakoff-an@mail.ru,
Tula State University, Tula, Russia

Application of Fracture Mechanics Methods for Calculation of Loads Acting on the Cutters of Coal Mining Machines

Use in calculations of loading of the machine tool in the interaction it with the rock mass of classical strength criteria, such as the ultimate strength of rocks in compression, tension, shear, etc., does not always reflect the real process of destruction. Modern concepts about fracture of materials based on the provisions in fracture mechanics, which considering fracture as a process of propagation of cracks taking into account the stress condition at the top of it.
Improved method for the calculation of loads acting on the rotary cutters during the destruction of the coal by roadheaders and cutter-loaders are presented. The method is based on the mathematical model of destruction process of rock mass by the cutter of mining machines. The model is based on the solution of a boundary value problem of linear fracture mechanics and allows revealing the mechanism of the process by identifying patterns of cracks development under action of the cutter. In addition, the model allows determining the load on the cutter. The obtained calculated dependences for determination of the cutting and feeding forces when coals are destroyed.
Keywords: mathematical model, fracture, crack, cutting and feeding forces, rocks, coal

P. 28–34

To the contents N. 3

V. I. Alexandrov, Professor, Head of Department, e-mail: victalex@mail.ru,
National Mineral Resources University (University of Mines), Saint Petersburg,
O. B. Gvozdev, Project Director, e-mail: oleg.gvozdev@evraz.com,
A. E. Karelin, Chief Specialist, e-mail: Aleksey.Karelin@evraz.com,
EVRAZ Kachkanarsky Mining and Processing Plant, Kachkanar, Sverdlovsk region,
A. A. Morozov, Chief Specialist, e-mail: morozov_46@list.ru, SOMEX JSC, Moscow, Russia

Evaluation of the Effect of the Roughness of Polyurethane Coating on the Inner Surface of Pipelines on Specific Head Loss in the Hydrotransport Systems

The paper presents the analytical calculations of specific losses of pressure in hydraulic transportation of mixtures of iron ore tailings Kachkanar GOK for the storage of tailings in the tailings pond. The calculations were made based on the results of experimental studies depending on the specific head loss on the roughness of the inner surface of pipelines lined with polyurethane coating. The calculations were made based on the results of experimental studies depending on the specific head loss on the roughness of the inner surface of pipelines lined with polyurethane coating. During the experimental determination of the roughness of polyurethane coatings of pipelines established that the value of physical roughness of the coatings more than four times less than the roughness of the steel pipe, which leads to a decrease in hydraulic drag coefficients in the formula for the calculation of the specific head losses — Darcy-Weisbach formula. The paper presents calculations of the coefficients relative and equivalent rough-ness for pipes coated and un-coated. Comparative data show that the use of polyurethane coatings for pipelines reduces specific energy in hydraulic transportation of iron ore tailings Kachkanar GOK more than 1,5 times.
Keywords: roughness, coefficient of hydraulic resistance, equivalent roughness, grain size distribution, slurry, specific head loss

P. 34–40

To the contents N. 3

S. L. Serjan, Assistant, e-mail: sergei.serzhan@inbox.ru,
V. I. Medvedkov, Professor, e-mail: vimedvedkov@yandex.ru,
National Mineral Resources University (University of Mines), Saint Petersburg, Russia

Substantiation of Improving Productivity of Dredge Device at Mining by Marine Complex of Solid Minerals

The dredge device with catcher presented in the form of drum ripper with a horizontal axis of rotation which is the part of a marine complex for underwater mining of solid minerals ferromanganese nodules, in particular) is considered. The analysis of operation of the drum ripper has been carried out and flying range of single ferromanganese nodules from interaction with working body then it is established that the actual productivity of the dredge device decreases. The specified shortcoming leads to decrease in efficiency of the dredge device and a marine complex in general.
For increase in efficiency of dredge device, the new design of dredge with a vertical axis of rotation with self-soaking up catcher which covering an area of loosening and representing an entrance confusor in the transport pipeline is offered. Working body in this design in the form of the faceplate with stepwise located under some corner a to the horizon the cutting plates is offered. Work of the specified GZU is analysed and it is shown that the nodules separated from a bottom fully get to the transport pipeline through the entrance confusor, necessary performance level of a marine complex thereby is reached. Productivity of GZU can be regulated by rotating speed of the faceplate.
Keywords: dredge device, improving the productivity, ferromanganese nodules

P. 41–46

Mining Equipment and Electromechanics. N. 4-2017

V. V. Timonin, Head of Laboratory, e-mail: timonin@misd.ru, D. I. Kokoulin, Senior Reseacher, S. E. Alekseev, Senior Reseacher, B. Kubanychbek, Reseach Associate,
N. A. Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia

Straightline Drilling in Underground Conditions in Terms of Berezovskaya Mine: Case History

Coal mining involves drilling, which is required to be straightline. In various drilling approaches, hole deviation is mostly influenced by an increase in axial pressure on a drill string. A promising method of straightline hole-making is rotary—percussive drilling using down-the-hole air drill hammers with the much lower pressure exerted on the hole bottom. The article presents the small-size down-the-hole air drill hammer layout used to design and manufacture a pilot run of air drill hammers PNB76 for drilling holes with a diameter of 76 mm. The data on the laboratory trials of the hammers are reported. The commercial-scale pretesting in Berezovskaya Mine, Kemerovo Region, hasproved applicability of the drilling method. For adaptable operation at a compressed airpressure up to 0,6 MPa, the air distribution system of the hammer is added with an elastic ring-type valve, which allows increasing pressure in the power stroke chamber and enhances energy characteristics. Based on the test results, the improved air drill hammer model PNB76U has been designed. Also, a new-design edge-type drill bit with a lead cutting edge combines the advantages of the rotary and percussive drilling. The trials in Berezovskaya Mine have demonstrated potency of the down-the-hole air drill hammers in straightline drilling in coal mines.
Keywords: mine, drill hole, drilling, impact energy, capacity, reliability, energy source, active areas, air distribution, striking element

P. 3–7

To the contents N. 4

D. A. Yungmeyster¹, Professor, A. S. Sakerin², Chief Engineer for Underground Mining Operations, R. I. Korolev¹, Student, e-mail: rom8592009@yandex.ru, V. A. Karlov¹, Student,
¹National Mineral Resources University (University of Mines), Saint Petersburg, Russia
²Apatit JSC, Kirovsk, Murmansk region, Russia

Modernization of Hydraulic Drill Heads

The article deals with the special features of the hydraulic drill heads (hydraulic hammers) are widespread worldwide and used on all drilling rigs mining machines. It describes the benefits they provide comparatively to the pneumatic drill heads, as well as possible ways of their development and improvement. The use of the dual shock system "the piston-striker-shank" is proposed, which consists in improving the transmission of the impulse through the element, smaller in size and weight, in the process, making the high frequency oscillations between the piston and the shank. The proposed modernization will enhance the service life of the rockdestroying tool (shank and drill bits) by applying the vibrations from the oscillations of the striker, which will also lead to increased drilling performance. The calculation of the parameters of the proposed impact system is given.
Keywords: drill, shank, impact, tinking of the striker, drilling speed

P. 8–13

To the contents N. 4

R. K. Basov, Postgraduate Student, A. M. Keropyan, Professor, e-mail: am_kerop@mail.ru, P. Ya. Bibikov, Associate Professor, V. A. Mostakov, Professor, National University of Science and Technology "MISiS", Moscow, Russia

Monitoring Geometric Characteristics of the Surface of the Track — the Basis of Improving the Operational Performance of Mining Locomotives

As a result of theoretical and experimental study determined the feasibility of continuous control (monitoring) of geometrical characteristics of the surfaces of the career track. It is established that the radii of curvature of the contacting surfaces of the system "wheel — rail" direct impact on the actual size of the contact patch, which depends on the traction ability of the mining locomotives.
The increase in the actual area of contact spot of the system" wheel — rail" can reduce contact stress, prolong the working surfaces of the career track to increase the traction capacity of the locomotive, and hence its operational performance.
Keywords: surface, the system "wheel — rail", monitoring, radius of profile curvature of the rail contact area, contact stress, career the locomotive, tractive ability, the resource track

P. 14–19

To the contents N. 4

V. V. Gabov, Professor, e-mail: gvv40@mail.ru,
V. S. Romanova, Postgraduate Student, e-mail: vica_00281@mail.ru,
National Mineral Resources University (University of Mines), Saint Petersburg, Russia

Features of Process of Rock's Crushing in the High-Frequency Cone Crusher with a Free-Turning Inner Cone

The model of process of rock's disintegration in the high-frequency vibrating cone crushers with a free-turning cone is considered. Model is formed on the basis of famous models used at the analysis of the process of destruction of rocks in the traditional cone crushers. The differences of analyzed have been taken into account in particular smaller amplitude and higher frequency of force action on the crushed material, selectivity and layering destruction of a fracture surface, and also interstadial output fine fractions from the zone of contact interaction.
Keywords: rock, disintegration, crusher, process, modeling

P. 20–24

To the contents N. 4

V. S. Klimash, Professor, e-mail: klimash@yandex.ru,
M. A. Sokolovskiy, Postgraduate Student, e-mail: Socel@mail.ru,
Komsomolsk-na-Amure State Technical University, Komsomolsk-na-Amure, Russia

System of Rational Management Energy Consumption of the Production Enterprise

The way of rational management of the mode of consumption of electric energy and the system for its realization intended for production of hydroiron and steel works is offered. The system carries out management of consumption of electric energy of the enterprise according to the planned indexes, and also makes restriction of energy consumption in the given time slices without stopping of the continuous technological processes and decrease in output. The hardware and software system is adapted to system of supervisory control and can function as a part of the intellectual electrical power networks created taking into account technologies "smart grid". Rational management of energy consumption of the production enterprises at immediate interaction with system of supervisory control of electrical power networks allows to provide a power consumption according to planned targets, and also to reduce an expense of electric energy in clocks of peak loads of a power supply system that leads to decrease of nonuniformity of the production schedule of electrical networks and to depreciation of purchase of electric energy by the enterprise. Besides interaction with system of the antiemergency automatic equipment of shutdown of loading allows to reduce time of elimination of the emergency operation of a power supply system and damage at the emergency restriction of the mode of consumption of electric energy of consumers.
Keywords: power effectiveness, control system of energy consumption, the continuous technological process, intellectual electrical power network

P. 25–31

To the contents N. 4

E. I. Komarov, Professor, V. G. Merzlyakov, Professor, e-mail: mgou-vgm@mail.ru, Moscow Polytechnic University, Moscow,
A. I. Verzin, Chief Engineer of the Career, Vita, GmBH, Yaroslavl, Russia

Evaluation of the Durability of the Crowns of the Teeth a Two Component System for the Protection of ESCO Buckets

Mathematical processing of results of tests of two-component crowns of the teeth of excavator buckets ESCO model 75SV2 (USA) allowed to assess their wear resistance relative to domestic teeth from Hadfield steel, and the excavation faces to differentiate according to the degree of abrasiveness of rocks.
Keywords: system, protection, the two teeth models, teeth, adapters, bucket, excavator, testing, durability, quarry, rocks, abrasive, life, faces, assess, intensity, wear

P. 32–35

To the contents N. 4

V. A. Korneyev¹, Associate Professor, e-mail: korneev_va@list.ru,
V. V. Chapliugin¹, Associate Professor, e-mail: chief.v.v@yandex.ru,
P. D. Krestovozdvigensky², Head of Department, e-mail: krepash@yandex.ru,
P. A. Korneyev¹, Leading Engineer, e-mail: pustelli@mail.ru
¹Siberian State Industrial University, Novokuznetsk, Russia
²"Mining Tool" Ltd., Novokuznetsk, Russia

Investigation of the Energy Intensity of Rotary Drilling of Holes for Anchorage

The article is devoted to evaluation of possibility of using classical dependencies linking the energy consumption of rotary drilling with the fortress of rocks on a scale of Professor M. M. Protodiakonov, for purposes of establishing the power drive the machines for rotary drilling of blast holes for anchoring. Topicality of the article lies in the fact that the above mentioned dependencies were obtained by drilling holes with a diameter of 42 mm cutters with the amount of feathers not exceeding 2. Currently drilling holes is much smaller diameter, including a cutter with 3 feathers. The conclusions of this paper are based on experimental data.
Keywords: power, drive, energy consumption, drilling rig, rotary drilling, anchoring, drilling cutter, mining, mechanics, hole

P. 36–40

To the contents N.4

A. M. Krasyuk, Professor, e-mail: am.krasuk@gmail.com,
P. V. Kosyh, Postgraduate Student, e-mail: p.kosykh@yahoo.com,
N. A. Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia

On the Calculation Model for the Study of the Bending Vibration of the Main Fan Rotor

Improving the axial fan design methods led to the creation of highly aerodynamic schemes. Main fans began to be produced mainly in a single-stage design. Despite the simplicity of the kinematic scheme of it, the calculation of the frequencies of natural bending vibrations is very complicated. This is due to the transmission shaft connecting the fan shaft with an electric motor and two clutches compensation. Calculation of vibrations of this kind of mechanical systems is carried out with two-mass model. Due to the fact that at the initial stage fan design options considered several designs, it is important to have a simplified method for evaluating the flexural natural frequencies of vibrations of the rotors. The authors justified the using of single-mass rotor discrete model for calculating its natural frequencies of flexural vibrations, and justified relations of rotor design parameters at which a transition to an one-mass discrete model. It is shown in some cases it is necessary to take into account the mass of the fan shaft in the single-mass model. Correct use of single-mass model greatly facilitates the calculation of rotor vibrations compared to multimass. The calculation of the natural frequencies of flexural vibrations was made on the example of the rotor of VO-21 fan.
Keywords: main mine fan, rotor bending vibrations, critical speed, one-stage axial fan

P. 41–45

To the contents N. 4

G. N. Lebedev, Professor, L. D. Pevzner, Professor, e-mail: lpevzner@msmu.ru, National University of Science and Technology "MISiS", Moscow, Russia

Neuronal Networking Solution of the Problem of Predicting Control of Methane Content in the Mining Extraction Process

The formulation of the problem of predictive control of the methane content in mining working area is formulated and its solution is proposed by neuronal network analysis of the measurements obtained with the help of sensors installed in different locations. The effectiveness of the proposed approach is shown when estimating the intensity of gas supply to the mining working area.
Keywords: mine extraction, forecast, control, methane sensors, neural network analysis

P. 46–48

To the contents N. 4

Mining Equipment and Electromechanics. N. 5-2017

A. A. Khoreshok¹, Professor, e-mail: haa.omit@kuzstu.ru, E. L. Yutjaev², General Director, A. A. Meshkov2, Technical Director, L. E. Mametyev¹, Professor
¹Kuzbass State Technical University after T. F. Gorbachev, Kemerovo, Russia
²"SUEK-Kuzbass" JSC, Leninsk-Kuznetsky, Kemerovo region, Russia

Regarding Training of Professionals for Coal Industry in Kuzbass

The brief information on Mining institute of KuzSTU is provided. Data on enrollment of students, release of mining engineers and data on interaction of institute with the coal enterprises of SUEK-Kuzbass are submitted.
Keywords: ministry, mining institute, mines, mining enterprises, set of students, target training, practice, scientific research, engineer

P. 3–5

To the contents N. 5

A. V. Stebnev, Chief Mechanic, "SUEK-Kuzbass" JSC, Leninsk-Kuznetsky, Kemerovo region,
V. V. Gabov, Professor, e-mail: gvv40@mail.ru, N. V. Babyr', Postgraduate Student, e-mail: nik.babyr@bk.ru,
Saint-Petersburg Mining University, Saint Petersburg, Russia

Method of Choice of Parameters Non-Impact Regulation of Resistance of Hydraulic Racks of Sections Fix to Lowering of Breeds of a Roof

The method of choice of parameters of non-impact regulation of resistance of hydraulic racks of sections is offered fix to lowering of breeds of a roof.
Keywords: the mechanized complex, roof support, the mountain pressure, a hydrorack, mimic, the hydrotransformer, a throttle, the safety valve

P. 6–10

To the contents N. 5

G. D. Buyalich¹, Professor, e-mail: gdb@kuzstu.ru, V. N. Shmat², Deputy General Director for Production, M. K. Khusnutdinov¹, Senior Lecturer
¹Kuzbass State Technical University after T. F. Gorbachev, Kemerovo, Russia
²"SUEK-Kuzbass" JSC, Leninsk-Kuznetsky, Kemerovo region, Russia

Features of Rolling Drilling Tool to Receive a Non-Circular Cross-Section Borehole

The article considers the factors influencing the design of the drilling tool. Analyzed the variants of shapes of cross-section determined by the number of corners and fillet mate well walls of different curvature. Determined that from the standpoint of the structural strength of the tool it is advisable to use a convex shape of the side walls of the well rounded their mates. It is concluded that by changing the cross-sectional shape is possible to find rational constructive parameters of the rotary drilling tool, in particular the dimensions of the bearings and number of drilling bit rolling cutters.
Keywords: drilling, drilling bit, form of bore hole, blast, hole, blasthole, drilling bit rolling cutters

P. 10–14

To the contents N. 5

V. G. Gulyaev, Professor, e-mail: vggulyaev@gmail.com,
Donetsk National Technical University, Donetsk, Ukraine

Urgency and Problems of Creation of Automation Coal Plough Complexes for Unmanned Excavation of Sloping Low Seams of Donetsk Coalfield

Domestic and foreign tendencies of creation of coal plough complexes for development of sloping low seams by long faces without constant presence of miners in the coal face are examined. Its urgency and problems of creation of the automation coal plough complexes for unmanned excavation of low coal seams in complicated mining and geological conditions were noted.
Keywords: plough mechanized complexes, mining and geological conditions, low seams, technical-and-economic indices, unmanned excavation, automation, creation problems, classification, parameters, range of use

P. 14–23

To the contents N. 5

A. A. Khoreshok¹, Professor, e-mail: haa.omit@kuzstu.ru, L. E. Mametyev¹, Professor, A. M. Tsekhin¹, Associate Professor, À. À. Meshkov², Technical Director, A. Yu. Borisov¹, Associate Professor
¹Kuzbass State Technical University after T. F. Gorbachev, Kemerovo, Russia
²"SUEK-Kuzbass" JSC, Leninsk-Kuznetsky, Kemerovo region, Russia

Justification of Parameters of Drive Power Executive Body of Boom-Type with Two Crowns and Disk Tool on the Triangular Prisms

Set the power range for rotary actuators boom-type executive body of domestic and foreign modern roadheaders. Determined power load and the power implemented by the rotation drive executive body with two crowns and disk tool on the triangular prisms. Selected prototypes of the roadheaders of domestic and foreign production on the adaptation of executive body with two crowns on to their power resources.
Keywords: roadheader, effector, crown, triangular prism, disk tool, power, drive

P. 23–30

To the contents N. 5

L. E. Mametyev¹, Professor, A. M. Tsekhin¹, Associate Professor, V. I. Nesterov¹, Professor, S. I. Sadykov², Chief Mechanic, A. Yu. Borisov¹, Associate Professor, e-mail: bau.asp@rambler.ru
¹Kuzbass State Technical University after T. F. Gorbachev, Kemerovo, Russia
²"SUEK-Kuzbass" JSC, Leninsk-Kuznetsky, Kemerovo region, Russia

The Definition of the Stability of Roadheader with Executive Body of Boom-Type with Two Crowns

Calculation of the longitudinal stability of the roadheader of selective action of the excavation downstream of mine workings. Peculiarities of formation of the power settings in the destruction of rocks and coal of the disk tool on the triangular prisms of two kinematically connected radial crowns.
Keywords: roadheader, effector, crown, triangular prism, disk tool, power, stability

P. 31–34

To the contents N. 5

E. K. Eshchin, Professor, e-mail: eke_kuzstu@mail.ru,
Kuzbass State Technical University after T. F. Gorbachev, Kemerovo, Russia

Detailed Calculations of Dynamic Operating Modes Electric Drives of Mining Machines

The issue of details calculations for dynamic modes of electric drives is considered. The attention is paid to procedure to analytical replace many-mass mechanical systems by other as equivalence two- or three-mass, it provides for gear ratios in the records of the reduced moments of inertia and shafts rigidity, which are assumed to be constant at all stages of the subsequent calculations. This constancy is violated in high-dynamic modes of the electric drive. It is proposed to consider the mechanical part of the electric drive as a set of rotating masses without ideology of reduction moments of inertia rotating masses, shafts rigidity and so on, in order to clarify the operational load of components of the electric drive.
Keywords: electric drive, mechanical transmission device, transmission ratio, dynamic modes

P. 35–39

To the contents N.5

G. D. Buyalich, Professor, e-mail: gdb@kuzstu.ru, A. S. Furman, Senior Lecturer, e-mail: asf30@mail.ru, Kuzbass State Technical University after T. F. Gorbachev, Kemerovo, Russia

Study of the Transport Process Mining Dump Trucks

The role of the speed of movement of mining trucks in the transport process. Defines the basic methods for the determination of speeds. Determined the confidence intervals of the velocities and accelerations of career dump trucks depending on the longitudinal gradient of the route.
Keywords: speed, mining dump truck, acceleration, confidence interval

P. 40–42

To the contents N. 5

B. L. Gerike^{1, 2}, Professor, e-mail: gbl_42@mail.ru, Yu. V. Drozdenko¹, Associat Professor, e-mail: duv.gmik@kuzstu.ru, P. B. Gerike², E. G. Kuzin³, Senior Lecturer, A. A. Mokrushev^{1, 2}, Postgraduate Student
¹Kuzbass State Technical University after T. F. Gorbachev, Kemerovo, Russia
²SB RAS Kemerovo Science Center, Kemerovo, Russia
³Regional Campus of Kuzbass State Technical University after T. F. Gorbachev, Prokopevsk, Russia

Recognition of Defects of Rolling Bearings in Gearboxes of Mining Machines Based on Evaluation of Vibration Parameters

In article an approach to recognition of defects of the rolling bearings used in various units of mining machines and equipment is considered. Approach is based on wavelet transformations of the vibroacoustic signals generated by various defects. Classification of the existing methods of diagnostics of technical condition of rolling bearings is given. Advantages and disadvantages of these methods are considered. Model of formation of shock impulses at appearance of defects is constructed and the opportunity of application of wavelet transformations for recognition the technical condition is shown. An example of bearings diagnostics of the DML drilling rig is also considered.
Keywords: mine machine, vibration, rolling bearings, shock impulse, wavelet transformation, technical condition

P. 43–48 

To the contents N. 5

Mining Equipment and Electromechanics. N. 6-2017

Yu. V. Zuev, Director, e-mail: tkgsmp@yandex.ru,
Shakhtoupravlenie "Sadkinskoe" of the Southern Coal Company, Belokalitvensky district, Rostov region, Russia

Investigation of Indices and Increase of Combine Heading Efficiency at the Mine "Sadkinskaya"

Analyses of technical-economical system formed at the enterprise showed that incease of efficiency of combine way of headings is one of the key directions of lowering specific expenditure for cool mining in the mine on the whole. On this context the final purpose of investigations is working out and following realication of the methodology of choice of the rational parameters of the cutting combine of choosing action providing the increase of the rate and lowering expenditures at heading underground working out of the mine.
Reaching this goal will permit to produce the rational choice of the cutting combine in the market of the production of mining machine building. The main parts of production investigations: standing the conditions of heading underground working out and regimes of the equipment exploitation, first of all — the cutting combine of choosing action, chronometrical measurements of every operation for defining productivity and labour capacity, instrumental measurements of productivity, power and energy loads of the main units of the cutting combine. Distribution of time and labour expenditure for separate processes and operations as well as the regimes in which it is necessary to carry out the measurement of loads in the executive loading organ drives and hudrosystem were defined.
It was found out that power and energetically possibilities of the cutting combine at 1GPKS are used not in full. The part of time and labour capacity of the heading cycle during which the face breakage by the combine takes place do not exceed 20 %, the labour capacity of the anchor support being one and half time more. It restricts the achievement of the necessary indices of heading underground workings out and requires the implementation of special technical solutions.
Keywords: heading underground working out, cutting combine of choosing action, regime of work of executive and loading organs, increasing the efficiency of combine cutting, methods of productive investigations, chronometrical measurement of productivity and labour capacity, distribution of time and labour capacity expenditures according it the operations of the heading cycle, methods of instrumental measurement of productivity and loads

P. 3–9

To the contents N. 6

D. M. Shprekher, Associate Professor, e-mail: shpreher-d@yandex.ru, Tula State University, Tula, E. B. Kolesnikov, Associate Professor, Novomoskovsk Institute (Branch) of D. Mendeleyev University of Chemical Technology, Novomoskovsk, Tula region, G. I. Babokin, Professor, National University of Science and Technology "MISiS", Moscow, Russia

Improving the Reliability of the Electromechanical System of the Coal Combine

Considered questions of increase of reliability of work of electric drive electromechanical systems of the coal combine through the use of neural network forecasting controlled electrical and mechanical parameters. Shows the control system of a coal combine in conjunction with neural block for control and forecasting. When approaching predictive values of controlled parameters to their critical values, the control system generates control actions, reducing the load on the power elements of the actuator, and issue a preemptive signal the need for maintenance in the near future. Given the structure of a hardware — software complex, which includes three levels of hierarchy. The lower level contains the sensors and transducers for measuring parameters of the main units of the of the coal combine and environmental factors, the middle level includes the technical conversion tool interfaces and subsequent collection of measurements, upper level, includes a set of automated workplaces of the manager functioning under the control of special software. The use of predicted values of the electric drive parameters allows to increase the mean time between failures and the availability factor of the electric drive compared with the control system without prediction parameters.
Keywords: monitoring, forecasting, electromechanical system, a coal combine, neural network, technical condition, reliability, hardware-software complex

P. 9–14

To the contents N. 6

E. I. Stepanov, Associate Professor, e -mail: ewg.stepanov2013@yandex.ru,
A. G. Petrov, Associate Professor, A. A. Avershin, Associate Professor,
Stakhanov Educational and Scientific Institute of Mining and Educational Technology Affiliated with Dalia Lugansk State University, Stakhanov, Ukraine

 Improving the System of Dust Suppression by Wetting Coal Seam

The work proposed developments changing the design tooling of the way the preliminary moistening of coal array of lava and its technological algorithm. As the hydropower element in the system of the fluid pumping in the array through the mud holes, used hydraulic transducers with electric control of displacement of plungers operating from the energy of the fluid fire-irrigation mainline mine. In mud-holes, after the discharge through them of liquid in the coal array, put elastic ampoule with moisturizing liquid to the full depth of the hole. The extraction mechanism at work in a breakage face along with an array of coal destroys the elastic and vials of liquid.
Keywords: prehydration of the coal massif, hydraulic transducers, downhole boreholes, fluid injection, the bottom of the lava, technological solution technological equipment

P. 15–19

To the contents N. 6

Yu. L. Zhukovsky, Associate Professor, e-mail: spmi_energo@mail.ru, N. A. Korolev, Postgraduate Student, e-mail: korolev_na_spmi@mail.ru, I. S. Babanova, Postgraduate Student, e-mail:irina_babanova@mail.ru, Saint-Petersburg Mining University, Saint Petersburg, Russia

Estimation of the Technical State and Residual Resource of Electromechanical Unit with Asynchronous Motor

This paper is devoted to the development of the estimation and forecasting method of the electromechanical unit technical condition. The proposed method is based on the integrated diagnostics process by vibrational and electrical parameters, taking into account the quality of the mains supply and operating conditions parameters. The developed forecasting system allows to improve the accuracy and the quality of diagnosis by determining the probability of electromechanical equipment failure-free operation at a parameter deviation from the norm with a specified accuracy by means of artificial neural network. The work results of the technical state assessment system is a diagnostic pictures of the technical condition probability and residual life quantification, obtained on the basis of the artificial neural network work, considering the electrical, vibrational and indirect parameters and detected defects.
Keywords: diagnostics, technical condition, residual life, electromechanical equipment, information system, the actual state, the artificial neural network

P. 20–25

To the contents N. 6

I. V. Barannikova, Associate Professor, I. Yu. Mazhibrada, Postgraduate Student, e-mail: irina170489@yahoo.com, National University of Science and Technology "MISiS", Moscow, Russia

Algorithm for Predicting the Probability of Failure of the Hydraulic System of Single-Bucket Mining Excavators

In this work we have shown the values of the basic indicators of the reliability of the hydraulic system of single-bucket excavators, such as Mean time between failures and Mean time to failure. Also, we determinate the main factors that affect the probability of failure of the hydraulic system of single-bucket excavators. The main factors can be grouped into three types: internal technical factors, external factors and current characteristics of the single-bucket excavators. Also, we determinate the main categories of failures. As a result of our work, we get an algorithm for obtaining the probability of failure of the hydraulic system of single-bucket excavators and the scale ofprobability of failure of the hydraulic system of single-bucket excavators. This algorithm will help improve efficiency of maintenance services.
Keywords: probability, single-bucket excavators, hydraulic system, the probability of failure, maintenance and repair of the system, Mean time between failures, Mean time to failure, categories of failures, algorithm for obtaining the probability, scale of probability

P. 26–29

To the contents N. 6

S. V. Petuhov, Chief Engineer, Siberian Coal Energy Company JSC,
A. V. Ljahomskij, Professor, A. I. Kuznecov, Undergraduate Student, e-mail: arturkuznecov1994@mail.ru, National University of Science and Technology "MISiS", Moscow, Russia

Energy Technology Profile of Excavation in the Development of Coal Deposits

On the basis of the analysis of the work of the excavators in the development of coal deposits was determined by statistical evaluations, established laws of distribution of energy parameters of the working modes that represent stochastic energy profiles. However, it was a simulation of energy profiles of excavation representing the relationships full and specific power consumption from the volume of work performed. It's use allows to increase the level of analytical description and management of specific power consumption when doing excavation works in terms of planning and reporting on power consumption.
Keywords: energy efficiency, statistical characteristics, the laws of distribution of power consumption, energy technology profiles of excavation

P. 30–33

To the contents N. 6

A. V. Ljahomskij, Professor, A. G. Kutepov, Senior Lecturer,
A. I. Kuznecov, Undergraduate Student, e-mail: arturkuznecov1994@mail.ru,
National University of Science and Technology "MISiS", Moscow, Russia

Improving the Efficiency of Lighting Systems Taking into Account the Lighting Characteristics of the Lighting Devices

The analysis of the currently used lighting equipment in mine shows that mainly find application fluorescent lamp and incandescent lamp. As a result of comparison of analogues selection of led with an average energy saving potential and the use of computer modeling of light it was found that the modeling method of illumination is more accurate and economical. On this basis developed proposals for the modernization of lighting companies that develop coal deposits.
Keywords: energy efficiency of lighting systems, led lamps, average energy saving potential, computer modeling of illamination

To the contents N.6

M. E. Kozlov, Postgraduate Student, e-mail: dbi471@gmail.com, L. D. Pevzner, Professor, e-mail: lpevzner@msmu.ru, Moscow Technological University, Moscow, Russia

Adaptive Regulator for Automatic Control System of the Digging Excavator

A mathematical model of the ECG-15 mining excavator control system with a regulator based on fuzzy logic and with an adaptive regulator was investigated. As a hypothetical driver who trains an adaptive controller one uses a regulator based on fuzzy logic. Comparative analysis of the results of modeling of such a control system with fuzzy and adaptive regulators showed that the adaptive regulator has successfully learned and was able to perform the task of automatic digging. In this case, if the fuzzy controller takes into account the thickness of the shavings taken by the bucket, then the adaptive controller digs in automatic mode without using this parameter.
Keywords: automatic control system, mine excavator, adaptive controller, fuzzy logic, modeling, intelligent control system

P. 38–42

To the contents N. 6

V. I. Bolobov, Professor, e-mail: boloboff@mail.ru, A. P. Batalov, Associate Professor, Le Thanh Binh, Postgraduate Student, G. A. Yusupov, Postgraduate Student, Saint-Petersburg Mining University, Saint Petersburg, Russia

Regularities of Rock Destruction with a Single Blow

Authors analyzed the working conditions of chisels of impact breaking and shearing machines, described the developed method and installation by studying of penetration processes of chisel into rock and shock-abrasive wear of its material. When impacted by freely falling strikers (D = 6 mm, L = 25 mm, cone-shaped with an angle 30°) from steels 38ÕÌ (AISI4140) and 55Ñ2 (AISI9255) as materials of chisels, which differ in strength properties and wear resistance, to granitic fragments with strength f = 6,2 on M. M. Protodyakonov's scale, investigated the regularities of rock destruction with a single blow (v₀ = 0,91 m/s, À₀ = 1,16 J) by accounting the blunting process of strikers tip. Based on the provisions of two-element classical impact system, mathematical description of penetration process of striker into rock under the experimental conditions is proposed. The calculation results, confirmed by the experimental results, show that with a single blow of a cone-shaped strike into granite, the penetration depth decreases with increasing of blunt area diameter of the striker by a relationship close to linear; the form of dependence is given. The calculated values of single blow number, after which critical value of blunting area diameter is reached (d_k* = 1,94 mm), and penetration of strike into rock is stopped, are 4096 blows for steel 38XM and 8 times more (32529 blows) for harder steel 55C2.
Authors conclude that the service life of chisel and the productivity of impact breaking and shearing machines can be sig­nificantly improved by manufacturing a chisel of more wear-resistant steels or by using methods that increase the hardness of chisel head, for example by cold treatment.
Keywords: shock tool, rock, depth of penetration, striker material, shock-abrasive wear, blunt area

P. 43–48

To the contents N. 6

Mining Equipment and Electromechanics. N. 7-2017

D. I. Shishlyannikov, Associate Professor, e-mail: 4varjag@mail.ru, M. G. Trifanov, Research Associate, N. V. Chekmasov, Associate Professor, Perm National Research Polytechnic University, Perm, S. L. Ivanov, Professor, Saint-Petersburg Mining University, Saint Petersburg, Russia

The Choice of Technically Justified Operating Modes of "Ural" Combines on the Basis of an Estimation of their Drivers Load under Real Operating Conditions

In the article the questions of increase of efficiency of work of tunneling-cleaning combines "Ural", widely applied on domestic potash mines are considered. It is pointed out that it is possible to provide rational parameters of the process of destroying potassium arrays with cutting tools of the executive bodies of mining combines, based on an assessment of the loading of the drive machines, which will reduce the specific energy consumption for ore extraction and will reduce the number of small unenriched classes in breakage products. The authors substantiate rational regime parameters of the work of the planetary-disk executive bodies of the Ural combines. A method for automatic control of the tunnel-cleaning combine "Ural" is proposed, which ensures the realization of the process of destruction of the potassium massif with rational cutting parameters on the basis of information on the loading of the drive motors.
Keywords: passage-cleaning combine, executive agency, rational mode parameters, method of automatic control

To the contents N. 7

À. B. Zhabin, Professor, e-mail: Zhabin.tula@mail.ru, A. V. Polyakov, Professor, e-mail: Polyakoff-an@mail.ru,
V. I. Sarychev, Professor, e-mail: Sarychevy@mail.ru, Tula State University,
V. G. Khachaturyan, Project Manager, e-mail: wil71@mail.ru, "Nornat" LLC, Tula, Russia

The Destruction of Oil Shale by High-Speed Water Jets

Oil shale is one of the alternative sources of hydrocarbons. However, its practical development is constrained by the particularly low level of domestic technology to-extraction in a cell system development. It is proposed to use hydro-mechanical extraction method by the combine method. However, if the destruction of rocks of different cleavers (cones, drums, etc.) has been well studied, the destruction of oil shale by high-speed water jets were not studied.
With this purpose experimental researches of process of cutting of oil shale by high-speed water jets are made. Identifies and describes the main factors of this process. As the main indicator adopted depth of the cracks. The experiments were performed on a specially designed stand allows to carry out research in a wide range of varying factors. This is a brief description of the test bench equipment.
It is established that the tensile strength in uniaxial compression of oil shale can be adopted as a criterion for assessing their s resistance in line with the destruction of high-speed water jets via the slit pattern. In addition, the description of patterns of change in the efficiency of the process cracking from hydraulic and operating parameters of the process.
Given a generalized criterial equation in dimensionless parameters reflecting the relationship of the main parameters of the process. Adequacy of obtained based on the actual results of experiments.
It is proposed to use the obtained results for the development of engineering methods of calculation of main indicators and parameters of the process of destruction of oil shale hydraulic shears, in conjunction with the shearing tool.
Keywords: oil shale, jet water cutting, factors and process indicators, test facilities, research conditions, results of experiments, patterns of cracking, the depth of the cut slit, the criterion of resistance of the oil shale destruction, dimensionless parameters, generalized estimated relationship

To the contents N. 7

O. I. Dudar, Associate Professor, e-mail: olegdudar@yandex.ru, E. S. Dudar, Associate Professor, Perm National Research Polytechnic University, Perm, Russia

Modelling of the Work of the Ventilating Equipment under Calculation by FEM a Flow Distribution in a Mine Network

The way of accounting of the working ventilating equipment under calculating ventilating network by FEM is considered. For linearization of the fan characteristic the method of chords is used. It is shown that the rising characteristic Q(?p) is customary for fans and this provides convergence of the iterative procedure of linearization. The correctness of the offered algorithm of accounting of fans is checked by solution of a test problem for the model ventilating network containing the "ÂÎÄ-30ì2" fan as an active element.
Keywords: ventilating network, finite element method, fan

P. 14–17

To the contents N. 7

N. A. Lykova, Head of the Bureau of Filtration Systems, A. V. Shavaleeva, Designer, Novomet-Perm, D. I. Shishlyannikov, Associate Professor, e-mail: shishlyannikov.di@novomet.ru, Perm National Research Polytechnic University, Perm, Russia

Equipment for Protecting Installations of Electric Centrifugal Pumps under Conditions Complicated by Salt Deposition and Corrosion

The main methods of inhibitor protection of electric centrifugal pumps are considered when operating under conditions complicated by salt deposition and corrosion. It is pointed out that the most cost-effective and effective way to protect deep-pumping equipment is to use borehole containers that are mounted under the base of a submersible motor or a block of a telemetric system of installations of electric centrifugal pumps. The structure and the principle of the operation of well containers manufactured by Novomet are presented. It is proved that the protection of the installations of electric centrifugal pumps under the conditions of scaling and corrosion through the use of borehole containers can significantly increase the average operating time of pumping equipment to failure.
Keywords: installation of electric centrifugal pumps, borehole container, inhibitor, complicated oil production conditions, time between failures

To the contents N. 7

A. N. Musinskiy, Senior Lecturer, e-mail: amusinskiy@gmail.com, V. G. Ostrovskiy, Associate Professor, S. N. Peschsherenko, Professor, Perm National Research Polytechnic University, Perm, Russia

Investigation of Accumulation of Mechanical Impurities in the Flows of Gas Separators and their Impact on Abrasive Wear

The destruction of gas separator during operation was investigated by means of test bench simulation to understand the mechanisms of abrasive wear of the gas separator screen. The design of the gas separator screen has been improved. Comparative tests have been conducted. The improved design of the screen has demonstrated the decrease of abrasive wear by a factor of 3—4.
Keywords: vortex gas separator, abrasive resistance, mechanical impurities, oil production, "flight" installations, hydroabrasive wear

To the contents N. 7

A. N. Ustinov, Chief Mechanic, M. V. Tyaktev, Leading Engineer, "LUKOIL-Perm" LLC,
D. I. Shishlyannikov, Associate Professor, e-mail: 4varjag@mail.ru, M. G. Trifanov, Research Associate, M. M. Tyaktev, Student, S. A. Frolov, Postgraduate Student,
Perm National Research Polytechnic University, Perm, Russia

Increasing the Efficiency of Hydraulic Drives of Sucker-Hole Pumping Units for Oil Production

The design features of rod borehole pumping units with a hydraulic drive for oil production are considered in the article. The analysis of merits and demerits of used hydraulic drive systems of rod borehole pumping units is carried out. The urgency of the problem of increasing the efficiency of using oilfield pumping equipment by reducing specific energy inputs for production of reservoir fluid is proved. The results of pilot-industrial tests of hydraulic drives of rod borehole pumping units with pneumatic balancing and unbalanced energy recovery in the network are presented. It is proved that the use of hydrodrives of these structures does not ensure the operation of rod borehole pumping units with rational parameters, which results in increased specific energy inputs for oil production and a reduction in the between-repair periods of the pumping unit. The article proposes the construction of hydraulic drive rod borehole pumping units with cargo-hydraulic balancing, in which the shortcomings of the tested drives are eliminated. The use of the proposed hydraulic drive rod borehole pumping units provides stepless control of the magnitude of the stroke of the piston and the frequency of oscillations in wide ranges, which makes it possible to apply the drive with cargo-hydraulic balancing in wells with different geological conditions.
Keywords: sucker-rod well pump installation, oil production, hydraulic drive, loading, balancing, energy consumption

To the contents N. 7

E. F. Beliaev, Professor, P. N. Tsylev, Professor, I. N. Shchapova, Associate Professor, e-mail: irina.shchapova@gmail.com, Perm National Research Polytechnic University, Perm, Russia

Energy-Efficient Low-Speed Asynchronous Electric Motors of Low Power

The serial production necessity of low-speed asynchronous electromechanical low-power energy motors is substantiated. There is an especially demand of such converters in the oil industry to ensure a continuous operation of wells sucker-rod units that pump liquid from wells with low productivity. Problems in the development of converter and new directions for improving their energy characteristics are considered.
Keywords: low-speed asynchronous energy converter of low power, wells with low productivity, energy efficiency

P. 32–39

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À. À. Pastukhov, Associate Professor, e-mail: past0@yandex.ru, Yu. F. Melnikov, Associate Professor, Perm National Research Polytechnic University, Perm, Russia

Calculation Method for Mining Trolley Systems

Increase in electric locomotive transportation capacity requires the improvement of power supply systems. It calls for the development of new calculation methods considering a great number of factors. Complexity of power supply systems for trolley transport facilities is responsible for statistic calculation methods. The method proposed is wasted on experimental results and statistic simulation data. It enables to consider actual maintenance conditions.
Keywords: accurate calculation methods, power supply system, locomotive transport, traction engine, load current, motion speed

P. 40–45

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A. A. Pastukhov, Associate Professor, e-mail: past0@yandex.ru, Perm National Research Polytechnic University, Perm, Russia

Explosion Proof Fiber-Optic System Mine Phone Communication Based on IP Technology

Proposed structural diagram of explosion-proof communication systems, where the principle is used as the basis for IP communications. Food in the proposed scheme is carried out from the AOSh that allows you to organize the lighting installation the telephone. Installing a central computer, performing the functions of the IP PBX, on the surface, allows you to select the appropriate model performance and easy upgrade.
Keywords: block diagram, system/IP connection, 100Base-FX format

To the contents N. 7