Mining Equipment and Electromechanics. N. 1-2018

N. M. Suslov, Professor, S. A. Chernukhin, Postgraduate Student, e-mail: stas_chernuhin@mail.ru, Ural State Mining University, Ekaterinburg, Russia

Hydraulic Actuator of Shagania Mechanism with Hydraulic Cumulators

Most powerful walking excavators-draglines are equipped with a walking movement mechanism with a hydraulic drive, which ensures smooth running and regulation of the step size. At the same time, such mechanisms do not fully use the energy of the raised excavator in the process of pacing. In the article the scheme of the pacing mechanism with accumulators is considered, which makes it possible to increase the efficiency of the walking process.
Keywords: pacing mechanism, excavator, lifting cylinders and traction, supporting shoes, hydraulic accumulators, hydraulic circuit

P. 3–7

To the contents N. 1

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

Relations of Active and Reactive Loads in Mechanisms of Working Equipment of a Hydraulic Excavator

It is shown that the loading of the main mechanisms of the working equipment of hydraulic excavators in comparison with electromechanical excavators is substantially higher due to the growth of reactive loads due to the sequential coupling of the mechanisms. The interdependencies between the power parameters of the main mechanisms on the basis of the power transfer functions of the mechanisms taking into account the kinematic features of the principal mechanisms are determined. The coefficient of reactive load, which characterizes the magnitude of the reactive load within the working area of the excavator, is proposed.
Keywords: hydraulic excavators, the main mechanisms, working equipment, reactive loads

To the contents N. 1

P. Yu. Babenkov, Postgraduate Student, V. S. Shestakov, Professor, e-mail: shestakov.v.s@mail.ru, Ural State Mining University, Ekaterinburg, Russia

Modeling the Working Process of a Hydraulic Excavator

For a hydraulic excavator with a "direct" shovel working equipment, a mathematical model, an algorithm and a program in an algorithmic language have been developed, which allow determining the working area of the excavator, possible digging forces, and efforts in the elements of the working equipment. For the excavator with a bucket capacity of 4 m3, studies were carried out to determine the boundaries of the working area, to calculate the digging effort. Studies show the dependence of the digging force on the position of the bucket, on the maximum effort in the hydraulic cylinders of the working equipment.
Keywords: hydraulic excavator, working equipment, boom, handle, bucket, hydraulic cylinder, working area, model, algorithm, digging forcå

To the contents N. 1

V. S. Bochkov, Associate Professor, e-mail: bochkof@list.ru, Ural State Mining University, Ekaterinburg, Russia

Increasing of Service Life the Teeth Bucket Excavator Type Direct Shovel

The urgency of the search for solutions for increasing the wear resistance of bucket teeth of an excavator type direct shovel is analyzed. The reasons for the wear of the teeth are considered. It is determined that when working excavators for rocks of VIII and IX categories, shock-abrasive wear of the inner side of the teeth and abrasive external wear occurs. It has been proved that the cold hardening of Hadfield's steel (the material for making the teeth), which occurs during the work of the excavator teeth in the breeds of VIII and IX categories, reduces the speed of shock abrasive wear on the inner side of the teeth and does not affect the abrasive wear of the outer. The method of thermomechanical processing of the outer side of the excavator tooth is proposed. It can increase the wear resistance of Hadfield's steel (110G13L) up to 1.7 times and lead to the effect of self-sharpening of the tooth due to equalization of the wear rate of the outer and inner parts of the tooth. The efficiency of thermomechanical treatment for reducing the rate of abrasive wear of Hadfield steel has been experimentally proven.
Keywords: teeth, bucket, Hadfield steel, excavator, direct shovel, abrasiveness, wear, cold hardening, thermomechanical treatment, self-sharpening, service life, wear resistance

P. 15–19

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S. A. Shemyakin, Professor, Pacific State University,
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

Drop-Down Bucket Hydraulic Excavator Type Direct Shovel

A review of existing designs drop bucket excavators with loading equipment or shovel and a description and operation of the bucket with upgraded drive visor opening, to improve performance.
Keywords: breed, shovel, bucket drop, gidromehanizm open visor, performance

P. 19–21

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S. E. Nikiforov, Leading Design Engineer, Group Chife of Mills, "Uralmashzavod" PJSC,
Yu. A. Lagunova, Professor, e-mail: yu.lagunova@mail.ru, A. E. Kalyanov, Postgraduate Student,
Ural State Mining University, Ekaterinburg, Russia

Features of the Design of the Drum Mills Produced by PJSC "Uralmashzavod"

In the article it is noted that "Uralmashzavod" is the leading producer of shredding equipment in Russia, produces drum mills rod, ball and self-grinding machines intended for grinding both dry and wet methods of ores and nonmetallic minerals. It is shown that innovations have appeared in the design and the standard size range of produced mills has expanded.
Keywords: drum mills rod, ball and self-grinding, standard size range, unit capacity, productivity, modernization of the structure

P. 22–26

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Yu. A. Lagunova, Professor, e-mail: yu.lagunova@mail.ru, Ural State Mining University, V. O. Furin, Head of Technical Service, K. A. Fedulov, Chief Designer of DRO,
"Uralmashzavod" PJSC, Division "Mining Equipment", Ekaterinburg, Russia

Cone Crushers of PJSC "Uralmashzavod" for Specific Operating Conditions

The main directions of improving the design and improving the efficiency of managing the working process of cone crushers of large, reduction, medium and fine crushing are shown. Dimensions of all sizes of cone crushers of large and reduction crushing are given. The geography of supplies of cone crushers produced by PJSC "Uralmashzavod" is given. Intelligent crushers with an automatic control system for operating mode have been developed. The results of general testing of cone crushers are presented.
Keywords: cone crushers of large, reduction, medium and fine crushing, intelligent cone crusher, automatic control system, gear reversible mechanism, operating mode

P. 27–33

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L. I. Andreeva, Chief Researcher, e-mail: tehnorem74@list.ru,
Chelyabinsk Branch of Institute of Mining of Ural Branch of the Russian Academy of Science, T. I. Krasnikova, Junior Researcher,
Scientific-Research Institute of Efficiency and Safety of Mining, Chelyabinsk, Russia

The Issue of Mechanization of Repair of Mining Machines

The possibility of using specialized tooling in the repair of large components and assemblies of excavators cyclical actions is considered which will significantly reduce the effort required to perform complicated operations during dismantling and assembly of mining machines, technological equipment, the tool.
Keywords: mechanization, removing and fitting parts, restoration, technological processes

To the contents N. 1

A. V. Stebnev, Chief Mechanic, "SUEK-Kuzbass" JSC, Leninsk-Kuznetsky, Kemerovo region, V. V. Gabov, Professor, e-mail: gvv40@mail.ru, A. I. Korolev, Postgraduate Student, e-mail: sashka_25region@mail.ru, Saint-Petersburg Mining University, Saint Petersburg, Russia

Analysis and Estimation of the Stability of the Operating Modes of the Purification Mechanized Complex

The degree of stability of the operating modes of the clean-up mechanized complexes in the complex mechanically cleaned faces of coal mines between interruptions for technological, technical or mining-geological reasons is analyzed. A method is proposed for assessing the degree of stability of the operating modes of complexes with an indicator equal to the ratio of their actual productivity to the estimated productivity for the period under consideration. The stability index is numerically equal to the product of the process stability factor with respect to the speed of the slaughter movement by the coefficient of stability of the work on the time of the excavating machine (combine). The influence of transient processes during sequential switching of the complex's mechanisms on the reduction of the stability of the excavation process is noted. The role of the adaptability of the cleaned mechanized complex to the changing mining and geological conditions and the co-adaptivity of the machinery and equipment of the complex in enhancing the stability of the operation of complexes in rational regimes is pointed out.
Keywords: coal seam, cleaning complex, excavation machine, mining and geological conditions, adaptation, operating modes, sagacity

P. 37–40

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A. K. Tkachuk, Senior Researcher, e-mail: tkachuk.184@yandex.ru, V. V. Timonin, Head of Laboratory, e-mail: timonin@misd.ru, V. N. Karpov, Researcher Associate, e-mail: karpov@misd.ru, D. V. Stepanov, Postgraduate Student, e-mail: sdv-92@mail.ru,
N. A. Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia

The Use of Automatic Vacuum-Compression Seismic Source in Underground Conditions

The results of the application of compression-vacuum impact machine (KVIM) in the underground conditions of ore deposits are presented. The schematic diagram and specifications of automatic vacuum pile driver (AVPD-1) are considered. The technical advantages of the new machine ere the basic model are described. In general, the results of industrial testing of machine in the mine conditions are given. Further steps applying compression-vacuum impact machines are offered.
Keywords: warning of rock bursts, compression-vacuum impact machine, automatic vacuum pile driver, seismic source, longitudinal waves, dynamic effects, the rock massif

P. 41–44

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S. A. Timukhin, Professor, e-mail: gmf.gm@m.ursmu.ru, Ural State Mining University, Ekaterinburg, V. I. Alexandrov, Professor, P. N. Maharatkin, Postgraduate Student, Saint-Petersburg Mining University, Saint Petersburg, Russia

Innovative Approach to the Design of the Main Mine Drainage Systems

The article presents the shortcomings of the existing approach to the design of the main mine drainage systems, which lead to an increase in operating costs for water drainage. An innovative approach to the design of complexes is considered, assuming a change in priorities — the minimum permissible level of safety to provide the least expensive option for choosing water-pumping equipment and the volume of catchment tanks for economic reasons. Technical and economic criteria of this approach to the design of dewatering complexes have been considered and recommended. The net discounted income is recommended as the main criterion, since it takes into account the time factor and allows considering the results obtained in comparable form. The conclusion is made that the implementation of the proposed innovative approach, in addition to reducing the costs of operating the drainage system, will improve the safety of mining operations.
Keywords: complexes of the main dewatering, design, innovative approach, technical and economic criteria

P. 44–46

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Mining Equipment and Electromechanics. N. 2-2018

N. M. Kachurin, Professor, A. Â. Zhabin, Professor, e-mail: Zhabin.tula@mail.ru, Tula State University, Tula, M. M. Shchegolevsky, President, e-mail: amgroup@mgroup.info, Representation "AMG of Woldwide investments limited", Moscow, Russia
On the 90th Anniversary of Vladimir Brenner

To the contents N.2

V. G. Merzlyakov, Professor, e-mail: mgou-vgm@mail.ru, Moscow Polytechnic University, Moscow, Russia

Water-Jet Technology in Mining: The Main Results of Research Works

The main results of research works performed in the National Scientific Center of Mining — Institute of Mining them A. A. Skochinsky in cooperation with the Tula State University in the study of water-jet technologies used in the mining industry. Special attention is given to results of studies of hydraulic, waterjet and gidromekhanika-ray methods of breaking coal and rocks and creation on their basis of executive bodies of mining machines and development of the system of high-pressure irrigation, providing militrissa in their work.
Keywords: water-jet technology, hydraulic, hydroabrasive, hydromechanical methods of breaking coal and rocks, high-pressure irrigation, pilestredet when operating mining machines

P. 6–11

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A. Â. Zhabin, Professor, e-mail: Zhabin.tula@mail.ru, Tula State University,
E. A. Averin, Engineer-Designer, e-mail: Evgeniy.averin.90@mail.ru, Skyratovsky Experimental Plant, Tula, A. V. Polyakov, Engineer-Expert, e-mail: Polyakoff-al@mail.ru, Industrial Safety Examination, M. M. Shchegolevsky, President, e-mail: amgroup@mgroup.info, Representation "AMG of Woldwide investments limited", Moscow, Russia

Mobile Tunnelingunit for the Combined Destruction of Rocks in Underground Conditions

Mining conditions are constantly deteriorating throughout recent years. But despite the increasing of mining difficulty it is still required high safety and labor efficiency altogether with reasonable cost of mining. One of the most promising decisions is the usage of waterjet technologies in mining.
The article proposes to readers a prospective mobile unit to destruct rocks by combined influence on them of abrasive water jets (AWJ) and mechanical tools. There is a principal scheme of the unit is represented as well as its working principle. It is also described a method to predict depth of cut when cutting rock with AWJ, which is quite simple, useful, and universal enough. Authors also represent a criterion of destruction initiation. It is a threshold velocity of abrasive particle at the moment of its crushing into rock's surface. The value of this parameter should be enough to guarantee that abrasive particle has kinetic energy to make stress within the rock more than its strength. This criterion is in the form useful for engineers, which is an equation to estimate minimal nominal water pressure required to accelerate abrasive particles up to their threshold velocity. There is also a method to predict theoretical performance of the unit per minute. The article also includes some recommendations in order to choose convenient mechanical tool depending on rock properties.
Keywords: waterjet technology, mobile tunnelingunit, technological scheme, design, hydroabrasive, hard rock, destruction, the depth of the cut, method of calculation, performance, disk cutter

To the contents N. 2

E. A. Averin, Engineer-Designer, e-mail: Evgeniy.averin.90@mail.ru, Skyratovsky Experimental Plant,
A. Â. Zhabin, Professor, e-mail: Zhabin.tula@mail.ru, A. V. Polyakov, Professor, e-mail: Polyakoff-an@mail.ru,
Tula State University, Tula,
M. M. Shchegolevsky, President, e-mail: amgroup@mgroup.info, Representation "AMG of Woldwide investments limited", Moscow, Russia

Analysis and Improvement of the Method for Estimation of Hard Rock Erosion when Destructing with Abrasive Water Jets

There is an analysis based on numerical experiments of the elementary method (conception) for estimation of hard rock erosion when destructing with abrasive water jets (AWJ) in the article. This allowed identifying some mistakes of the method in order to improve it. The article also includes ways for development of the conception.
Keywords: AWJ, hard rock, depth of cut, method, erosion, threshold velocity, destruction initiation

P. 17–25

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A. A. Podkolzin, Professor, e-mail: apodkolzin@dialog.nirhtu.ru,
Novomoskovsk Institute (Branch) of Dmitry Mendeleev University of Chemical Technology of Russia, Novomoskovsk, Tula region, Russia

Improvement of the Hydraulic Drive the Longwall Shield

Developed proposals for the improvement of the hydraulic drive shaft of the powered roof supports with the aim of improving the reliability, security and adaptability to the conditions and modes of operation based on the optimization of the structure parameters and operating modes for technological and energy areas, reducing energy consumption and increasing the efficiency of the equipment. Investigated variants of the hydraulic drive to improve the reliability of mounting and control roof; a pumping plant with variable structure and equipment; hydraulic rack with additional functions high-speed kinematic and automated power axial force it to the required level; the hydraulic cylinders of movement with the devices of automatic switching of operation mode from external resistance, with the additional piston and the servo system controlling the position of a section relative to the slaughter and other solutions.
To study complex hydro-mechanical system we developed a mathematical description based on the Lagrange equations of the second kind for dissipative systems with a given function of the Rayleigh and the forces generated due to the energy sources.
Processing of the simulation results showed that the savings in time is achieved at each stage of the technological cycle.
Keywords: powered support, stope, the roof of the mine, mount, hydraulics, hydraulic drive, alternative, option, optimization, efficiency

To the contents N. 2

N. I. Sysoev, Professor, e-mail: sysoevngmo@gmail.com, Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Yu. V. Turuk, Professor, e-mail: uraturuk@mail.ru, I. E. Kolesnichenko, Head of Chair, å-mail: kolesnichenko_igor@rambler.ru, Â. Â. Lugantsev, Professor, å-mail: boris4721@mail.ru, Shakhty Institute (Branch) of the South-Russian State Platov Polytechnic University (NPI), Shakhty, Rostov region, Russia

New Technical Solutions for Improving the Reliability and Efficiency of the Powered Supports Working in the Withdrawal of Coal-Based Plasts

The design features of single-row and double-row plow and combine shielded powered support, their advantages and disadvantages were analyzed. The construction of the mechanisms of the movement of the support units is considered. The necessity of using elastic mechanisms (ram tub-pushers) in the structures of the movement mechanisms is substantiated. Proposed new technical solutions for equipping a single-row section with a catamaran-type base and a two-row panel fastening section with a solid rigid base with movement mechanisms using elastic rods. Elastic rods are fixed in a flat pusher, moving out of the guides with hydraulic jacks of movement, keep the conveyor from sliding down the fall of the formation within their elastic deformations and the sections of the directed movement of the sections. Pivotally connected to rotating cylindrical drafts, a screed in a single-row panel section with a catamaran-type base provides longitudinal displacement of the base skis relative to each other, and rotating rods, located in the skid, their movement in the vertical direction when the section crosses the thresholds in the soil of the formation. Using of such movement mechanisms significantly increases the reliability and efficiency of mechanized complex.
Keywords: single-row shielded powered support, double-row shielded powered support, face conveyer, movement mechanism, hydraulic advancing cylinder of the movement mechanisms,base of section, flexible rods

To the contents N. 2

D. A. Yungmeyster, Professor, A. I. Isaev, Assistant, e-mail: Isaev_AI@pers.spmi.ru, P. D. Naumova, Postgraduate Student, e-mail: uda@spmi.ru, Saint-Petersburg Mining University, Saint Petersburg, Russia

Development of the Construction of the Complex for Tunneling of Short Workings in Cambrian Clays

The article presents data on various tunneling methods for short workings in the Cambrian clays of the SPb JSC Metrostroy mines including the description of the possible means of mechanization. It also deals with difficulties of application of standard tunneling complexes in these conditions. The article compares the cyclograms of tunneling of a 6-meter diameter short working using manual labor and wooden face fixing with the cyclograms of tunneling by means of mechanized breaking of the face rocks with double hammers located on the manipulator and fixing the face with pneumatic cushions. The article notes a 1,5-time decrease in time of tunneling with the use of hammers on the manipulator and pneumatic cushions. It also gives the calculations of the economical effeciency of using this new equipment in comparison with technology based on manual labor.
Keywords: subway, slaughter, clay, fastening, hammer, work schedule

P. 35–40

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G. Sh. Khazanovich, Professor, e-mail: hazanovich@mail.ru, Shakhty Institute (Branch) of the South-Russian State Platov Polytechnic University (NPI), Shakhty, Rostov region, Russia

Current Trends in Scientific Research Mining Equipment
The aim of this work is the study of the topical directions of scientific research of mining equipment. The substantiation of actual directions of scientific researches of mining machines in conjunction with the development prospects of the coal industry in Russia. The role of coal in the world for the development of the world economy. From this standpoint considers the provisions of the Russian Energy strategy and directions of development of the coal industry together with the enterprises-consumers of coal. A brief assessment of technology and mechanization of mining operations in the mines of Russia and abroad and the main trends of development of mining machinery in mining industry mining countries. A brief overview and critical evaluation of scientific researches, inventions and developments made in YURGPU (NPI) and Shakhty Institute over the past 25 years in the field of mining techniques. Justify the promising directions of research. In conclusion, there is a need to coordinate researching papers in the field of further improvement of mining equipment for release to production machines a new technological level.
Keywords: research, development of coal industry, tunnel loading and transport modules, optimizing business processes, the choice of technical solutions, modeling business processes, the random character of external impacts, aggregated tunneling system

P. 41–45

To the contents N. 2

A. B. Zhabin, Professor, e-mail: Zhabin.tula@mail.ru, A. V. Polyakov, Professor, e-mail: Polyakoff-an@mail.ru, T. V. Kovaleva, Associate Professor, e-mail: Kovaleva071@mail.ru, Tula State University, E. A. Averin, Engineer-Designer, e-mail: Evgeniy.averin.90@mail.ru, Skyratovsky Experimental Plant, Tula, Russia

About Design Scheme for Determining the Stability of Roadheaders

A brief analysis of the problem of calculating the stability of the roadheader, which reflects the trends and results of research and development of methods for calculating the stability of roadheaders. The stability condition of the roadheader is given, which consists in obtaining nonnegative values of the moments of overturning and restoring forces and is applicable for a computer assessment. The modes of slaughtering treatment by the executive body equipped with axially and transversely cutting heads are described. The design scheme of a passageway combine for an assessment of its stability is presented.. This is obtained by the graphical-analytical method estimated some relations for calculating the stability of roadheader.
Keywords: roadheader, the condition of stability, modes of slaughter processing, the block diagram, the main parameters, the equations of moments of forces, method of calculation

To the contents N. 2

A. A. Rozhkov, Professor¹, Chair of the Board of Directors²,
e-mail: aarozhkov@mail.ru, L. I. Kantowicz, Professor¹, e-mail: kantovich70@yandex.ru,
A. A. Grabskii, Professor¹, e-mail: a.a.grabsky@yandex.ru,
E. P. Grabskaia, Associate Professor¹, e-mail: pgmk@mail.ru
¹National University of Science and Technology "MISIS", Moscow,
²"Rosinformugol" JSC, Moscow, Russia

To the Question of Import Substitution and Localization of Production of the Main Technological Equipment in the Coal Industry of Russia

This article considers the issues of import substitution and localization of production of the main technological equipment in the coal industry of Russia, including: analysis and evaluation of the ratios used in the domestic and international mining and mining equipment. Reviewed and determined the proportion of the presence of imported mining machinery and equipment in underground coal mining, the share of imported availability: of powered roof supports, sewage treatment and tunneling machines, loading machines, scraper and belt conveyors, electric locomotives and diesel locomotives. The analysis made by the countries importers. Given the utilization of the main mining equipment for underground mining in 2015—2016. Also conducted analysis and determined the proportion of the presence of imported mining machines and equipment for open coal mining. For shovel and bucket excavators to the presence of imported forklifts and drilling rigs, bulldozers and engineering vehicles. Determined the utilization of this equipment on the cuts in 2015—2016, the most critical equipment, in part depending on the supply of imported mining equipment. Presents a graphic interpretation of the justification of boundaries of localization of production in Russia mining equipment developed abroad, where the boundaries of localization of production consistent with the objectives of technological development and security and their marketability — the prospects for their expansion. The proposed action plan on import substitution in the heavy engineering industry of Russia in terms of mining equipment, which realization will allow to reduce the import dependence of coal industry and the growth of localization of production and technology at the level of import independence of the Russian coal industry for the main groups of mining equipment by 2030. Presents a forecast of changes in the boundaries of import dependence and localization of production in the period 2016—2030.
Keywords: coal mining industry Russia, import substitution, mining and mining equipment, underground and open mining of coal, the localization boundaries localization

P. 50–57

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V. V. Antipov, Director, e-mail: seztula@mail.ru, Yu. V. Antipov, Technical Director, Yu. N. Naumov, Chief Designer, E. A. Averin, Engineer-Designer, e-mail: evgeniy.averin.90@mail.ru, Skyratovsky Experimental Plant, Tula, Russia

Skyratovsky Experimental Plant: Permanent Strive to Change Mining Engineering

The paper tells the history of the Skuratovskiy experimental plant. It also describes key achievements and ways of development for the company. The paper consists of a review of the company's production and its technical data.
Keywords: mining equipment, tunneling, shaft construction, underground mining, underground construction, SPKV-type shaft boring machines, SKT-type shaft boring machines for hard rock

To the contents N.2

Mining Equipment and Electromechanics. N. 3-2018

G. Sh. Khazanovich, Professor, e-mail: hazanovich@mail.ru, V. G. Chernykh, Associate Professor, Yu. P. Stashinov, Associate Professor, S. E. Menshenin, Associate Professor, E. Yu. Voronova, Associate Professor,
Shakhty Institute (Branch) of Platov South-Russian State Polytechnic University (NPI), Shakhty, Russia

Contribution of Scientists Shakhtinsky Institute (Branch) HSRPU (NPI) Named after M. I. Platov in Scientific and Practical Achievements in the Field of Mining Machine Science for 60 Years

The main achievements of scientists of mining electromechanical departments of the Shakhtinsky Institute (branch) of the South-Russian State Polytechnic University (NPI) named after M. I. Platov for the period 1958—2018 in the field of various areas of mining engineering. The main scientific achievements and scientific and technical developments in the field of the theory of operation of mining, tunneling, mining loading, transport, stationary machines and electromechanical equipment are considered. The results of scientific personnel training, scientific publications, the list of textbooks and teaching aids published by the teachers of the department, which was originally called "Mountain Electromechanics", are given for 60 years. The established scientific and technical relationships with the leading industry institutes and mining engineering enterprises of the USSR and the Russian Federation.
Keywords: mining engineering, mining electromechanics, electric machine and hydraulic machine differentials in the drive of mining machines, directed movement of mining machines and underground shells, tunneling loading and transport modules and aggregated systems, electric drive of mine electric locomotives, plowing units, training of scientific personnel, scientific and technical development, publication

To the contents N.3

Yu. M. Lyashenko, Professor, Shakhty Institute (Branch) of Platov South-Russian State Polytechnic University (NPI), Shakhty, E. A. Revyakina, Associate Professor, e-mail: revylena@yandex.ru, Don State Technical University, Rostov-on-Don, Russia

Methodological Approaches to Modeling of the System "Low-Body Body — Working Element" in the Investigations of the Process of Loading the Rock

The article considers the experience of modeling the state of the environment in studies of the process of interaction of a loader bucket with a stack of lumped material and the prospects for the development of modern methods for investigating the physical and technological processes of interaction of the executive bodies with the external environment on the basis of the application of numerical methods and detailed visualization of the investigated processes.
Keywords: mechanized loading, resistance to introduction, statics of an ideal flowing medium, rheological model

P. 15–20

To the contents N. 3

E. Yu. Voronova, Associate Professor, e-mail: eleonora_sam_ti@mail.ru, G. Sh. Khazanovich, Professor, e-mail: hazanovich@rambler.ru,
Shakhty Institute (Branch) of Platov South-Russian State Polytechnic University (NPI), Shakhty, O. A. Agafonov, Chief Engineering, Shakhtoupravlenie "Sadkinskoe", Rostov region, Russia

Scientific Basis for the Development of Aggregated Tunnel Systems

The scientific and technical problem of creating competitive mining equipment of a new technical level determines the urgency of developing the principles of systematization, the functioning of synthesis and evaluation of the efficiency of aggregated tunnel systems (APS). The generalized structural and functional systematization of APS for drilling and blasting and combine mining methods is based on the principles of the system approach, reflects the unified rules for the construction of APS structures, is distinguished by a new set of classification characteristics and is the basis for the structural synthesis of new technical solutions. Simulation and statistical model of the functioning of drilling and blast-hole mining systems takes into account their structural states during the period of the given set of mine workings and models their functioning as a stochastic process. The proposed efficiency criterion makes it possible to perform a comparative assessment of the functioning and decide on the choice of the most rational transmission system, taking into account the degree of achievement of the required indicators. The order of procedures for structural synthesis of APS takes into account the conditions for the compatibility of elements and allows the development of promising options that are most effective under given operating conditions. The APS of the original principle of action is developed — the tunnel explosive-explosion complex of the PKVN. A distinctive feature of the processes of forming the cargo flow of the wedge traction and transporting body (TTO) of the PCVN is that the cargo volume at the outlet from the cell is determined by the load pressure on the bearing surface of the wedge conveyor. Procedures for parametric optimization of APS are distinguished by a two-step iterative implementation of the process of determining the basic design and technological constraints, formalizing the objective functions of the elements, and searching for optimal parameters.
Keywords: aggregated tunneling system, systematization, model of functioning, coefficient of efficiency, structural synthesis, parametric synthesis, mathematical models of cargo flow calculation, experimental model, tunneling explosive complex

P. 21–25

To the contents N. 3

V. G. Chernykh, Associate Professor, A. A. Domnitskiy, Associate Professor, e-mail: dom-a-a@mail.ru, A. S. Nosenko, Professor, e-mail: asnosenko@mail.ru,
Shakhty Institute (Branch) of Platov South-Russian State Polytechnic University (NPI), Shakhty, Russia

Continuous Heading Machine Technologies Application in Road Tunnels Construction

This article reviews application aspects of continuous mining technology for road tunnels construction using machine mining considering characteristics and classification procedure established by standard which is being developed.
Keywords: road tunnel, classification, tunneling machine, loading elevator

To the contents N. 3

A. S. Nosenko, Professor, e-mail: asnosenko@mail.ru, A. A. Domnitskiy, Associate Professor, V. G. Khazanovich, Associate Professor, V. V. Zubov, Senior Lecturer, Shakhty Institute (Branch) of Platov South-Russian State Polytechnic University (NPI), Shakhty, Russia

Improvement of Loading-Transportation Modules of Mining Equipment

The technical solutions of the loading and transport modules, intended for use in the mining equipment, based on the use of wedge-shaped heating elements with variable geometry, and the hydraulic drive of the progressive action are given.
Keywords: mining equipment set, reloader, loading device

P. 29–32

To the contents N. 3

A. V. Otrokov, Associate Professor, G. Sh. Khazanovich, Professor, e-mail: hazanovich@rambler.ru, N. B. Afonina, Associate Professor, Shakhty Institute (Branch) of Platov South-Russian State Polytechnic University (NPI), Shakhty, Russia

Theoretical and Experimental Research of Loading Organs of Continuous Action

The mining continuous action loading organs are used both in mining loading machines and in boom-type roadheaders. The productivity of the loading-transporting subsystem often determines the productivity of the roadheading system. In the Shakhty institute (branch) of Platov SRSPU (NPI) in recent years has received the results of the kinematic and force analysis of the mechanisms of the loading organs continuous action various types, carried out experimental studies and proposed engineering techniques for selecting parameters of modern loading organs with gathering-stars.
Keywords: roadheader, gathering-arms loader, gathering-stars loader, choice of parameters, computer model, factor of trajectory quality

P. 32–36

To the contents N. 3

N. I. Sysoev, Professor, e-mail: sysoevngmo@gmail.com, D. A. Grinko, Associate Professor, e-mail: dingo17@mail.ru, A. S. Kozhevnikov, Senior Lecturer, e-mail: ackngmo@gmail.com, Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia

Increasing of Efficiency of Functioning of Cutter-Loader and Drilling Machines by Discrete Management of their Regime Parameters

In the article, based on the generalized approach to the features of rock destruction by cutting tools of cutter-loder and drilling machines consider ways to improve the efficiency of their functioning. As a criterion for the efficiency functioning of the cutter-loader and drilling machines, the specific energy intensity of the destruction and the technical productivity are respectively taken. Control algorithms are offered, as well as technical solutions for their implementation, ensuring the maintenance of the regime parameters of the cutter-loader and drilling machines at the optimum level.
Keywords: mining tools, drilling machines, cutter-loder machines, efficiency of functioning, regime parameters, energy consumption of destruction, technical productivity, control algorithm

P. 37–41

To the contents N. 3

S. E. Menshenin, Associate Professor, e-mail: ms67fan@mail.ru, Shakhty Institute (Branch) of Platov South-Russian State Polytechnic University (NPI), Shakhty, E. A. Menshenina, Associate Professor, Don State Technical University, Rostov-on-Don, Russia

Method of Development and Correction of Trajectory Directed Wells of Small Diameter

The article deals the problems of use of trenchless pipelining of engineering services technologies and restriction on extent of the laid well connected with a curvature of a boring tool are considered. The way of laying of the well including expeditious correcting of provision of a head tool in the wellhead is offered. The axial effort is divided into two components, one of which provides formation of the well, and the second serves advance of set of drills.
The device including the head tool-diverter and the spatial focused handling mechanism allowing to provide high precision of the set trajectory realization by exact installation of working body in any necessary situation taking into account the current indications of the georadar is developed for realization of a way.
The information and measuring control system of a head tool, and the technological sequence of operations on lying of wells and their correcting of their direction is also developed. The developed technical provides high degree of controllability and ac­curacy of realization of the set trajectory.
Keywords: trenchless pipelaying, head tool-diverter, manipulator system, static piercing, adjustment of pore, remote-control system

P. 42–45

To the contents N. 3

Yu. P. Stashinov, Associate Professor, e-mail yustashinov@yandex.ru, D. V. Volkov, Associate Professor, A. V. Prudiy, Senior Lecturer, A. O. Khmyrov, Student,
Shakhty Institute (Branch) of Platov South-Russian State Polytechnic University (NPI), Shakhty, Russia

The State and Some Directions of Upgrade of a Traction Drive of Mining Electric Locomotives

It is shown that the traction drives of the mining electric locomotives with series-wound DC motors and stepped speed control become out of date and need a serious upgrade. The promising direction of its further enhancement is the use of brushless electric motors: asynchronous with frequency control, gated and switched reluctance. At the same time the works on further less expensive upgrade of DC traction drive which potentialities have not been realized in full measure is steel in demand.
The efficiency of application of the chopper fed electric drive with controlled hardness of speed-torque characteristics is substantiated. An example of working up such a drive with series-wound motors and the cascade control system with proportional speed controller and relay current controller is considered. The variant of using electrochemical capacitors as an accumulator of regenerated energy is suggested. The results of computer simulation of the developed traction drive of mining electric locomotives are given.
Keywords: traction drive, electric mine locomotive, speed-torque characteristics, pulse control, regenerative braking, electrochemical capacitor

P. 45–50

To the contents N. 3

B. B. Lugantsev, Professor, e-mail: shaktniui@yandex.ru, Yu. V. Turuk, Professor,
Shakhty Institute (Branch) of Platov South-Russian State Polytechnic University (NPI), Shakhty, Russia

Control of Sliding Plants in the Vertical Plane

The console-lever control system is used in the plough systems working with powered supports connected with conveyor. The difference of the control system in the vertical plane of a seam with horizontal hydraulic cylinders from the console-lever control system is that the control means provide for lifting or lowering only the face part of the conveyor. In this case part of the conveyor in a mined-out space is constantly on the foor, which eliminates the ingress of dust coal under the conveyor.
The height of linear sections of the conveyor can increase in a mined-out space by using of the console-lever system in the process of control that can be critical when mining of thin seams. The angle of inclination of cutting head may also change with change in the working geometry of the picks and with the occurrence of large side thrusts on them. These drawbacks are absent by using of control system with horizontal hydraulic cylinders.
Keywords: plow system, linear sections of conveyor, hydraulic cylinders, rise of the sock of detail in the form of the corner, floor picks, console-lever system, cutting head

P. 50–51

To the contents N.3

Yu. V. Turuk, Professor, e-mail: uraturuk@mail.ru, B. B. Lugantsev, Professor, e-mail: boris4721@mail.ru, N. V. Titov, Professor, Shakhty Institute (Branch) of Platov South-Russian State Polytechnic University (NPI), Shakhty, Russia

Improvement of Efficiency Application of Powered Supports at the Reception Coal Plasts with Weak Soils

The reasons for the decrease in the efficiency of the powered support are revealed, the main ones being the indentation of the bases into the soil of the formation and the formation of the furrow during their movement. It is established that the pressure decrease at the base of the section of the powered support can be achieved due to the device of the turning front edge of the base, i. e. installation of rotary skids.
A technique has been developed for determining the lift of a rotary skid, which ensures the exit of the support section pressed into the soil and the technical requirements for the design of a rotary skid, which ensures the effective use of powered support in conditions with weak soils.
It is proved that the pick of the turning skid should be raised. The maximum angle of lifting of the pick of the turntable skid was established at the exit of the depressed section of the support and the area of application of the powered support by the criterion of the resistivity of the soil to shear
Keywords: powered support, base of the support section, pressing into the soil of the formation, mechanism of the base lifting, rotary skid, lifting force, lifting angle

P. 52–54

To the contents N. 3

A. N. Petukhov, Associate Professor, e-mail: petuhov_Aleksandr37@mail.ru,
Shakhty Institute (Branch) of Platov South-Russian State Polytechnic University (NPI), Shakhty, P. S. Zhelobkov, Mining Engineer, Lebedinsky GOK, Gubkin, Russia

The New Generation of Jaw with High Degree of Crushing

This article gives an overview of the constructions of jaw crushers which were made by the authors of this article.
Keywords: crushing, jaw crushers, the degree of crushing, the configuration of crushing cheeks, energy consumption

P. 55–59

To the contents N.3

V. A. Yevstratov, Professor, e-mail: vae602@yandex.ru, A. V. Rud', Associate Professor, A. S. Apachanov, Associate Professor, e-mail: aasprof@rambler.ru, V. I. Grigor'yev, K. Yu. Belousov, Postgraduate Student, Shakhty Institute (Branch) of Platov South-Russian State Polytechnic University (NPI), Shakhty, Russia

Simulation of the Process of Transportation of Drilling Wrong with Wheel Drilling of Vertical Wells

A mathematical model is presented for the flow of a drilling fluid flow in a vertical well during auger drilling, taking into account the shape of the cross section of the flow, allowing one to investigate the influence of the structural and regime parameters of the screw on the speed of the drifting fines in the direction of transportation and to assign rational values of these parameters to stage of design, depending on the properties of the rock.
Keywords: auger blade, rock particle, rock flow, direction of flow, material release factor

P. 60–63

To the contents N.3