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Viktor V. Gabov
Viktor V. Gabov
Professor, Ph.D., Dr.Sci.
Saint Petersburg Mining University
Professor, Ph.D., Dr.Sci.
Saint Petersburg Mining University

Articles

Geotechnical Engineering and Engineering Geology
  • Date submitted
    2021-12-19
  • Date accepted
    2022-07-21
  • Online publication date
    2022-10-18
  • Date published
    2022-11-10

Increasing the content of coarse fractions in the mined coal mass by a combine using paired cuts

Article preview

The main volume of coal is mined underground using shearers. In modern shearers, auger actuators are mainly used, which are distinguished by the simplicity of design, manufacturability and reliability. However, in the process of separating coal from mass by cutting, the yield of fine grades is 40-50 % of the total production volume. Therefore, the search and development of technical solutions that provide an increase in the yield of large fractions in the process of coal mining with auger shearers is an urgent task. Traditionally, this problem is solved by increasing the thickness of the slices, which is achieved by installing cutters with a larger radial reach and increasing the shearer feed rate. An unconventional way to increase the cross section of slices by forming energy-efficient paired and group slices with mutual superposition of stress fields in the mass from the action of neighboring cutters is considered. The results of modeling the process of cutting coal confirm that an increase in the efficiency of destruction of the rock mass by the cutters of the auger executive bodies of the shearer can be achieved by a complex technical solution, including the formation of paired cuts and combined stress zones in the rock mass. As a result, the output of large fragments when cutting with paired cutters increases by 1.3-1.8 times compared with cutting with a single cutter.

How to cite: Gabov V.V., Xuan N.V., Zadkov D.A., Tho T.D. Increasing the content of coarse fractions in the mined coal mass by a combine using paired cuts // Journal of Mining Institute. 2022. Vol. 257. p. 764-770. DOI: 10.31897/PMI.2022.66
Mining
  • Date submitted
    2018-11-05
  • Date accepted
    2019-01-01
  • Date published
    2019-04-25

Features of elementary burst formation during cutting coals and isotropic materials with reference cutting tool of mining machines

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The paper considers the cutting of brittle coals and rocks by a single cutter of a mining machine, in contrast to the generally accepted integral approach, different from the standpoint of the formation of successive elementary bursts that make up the cut. The process of the formation of an elementary bust in time is viewed as successive phases. Due to the complexity and multi-factor nature of the process, preference is given to experimental bench studies using reference cutters, isotropic materials, and real rock blocks. The bursting parameters values greatly influence the time of static forces action, the peculiarities of the formation of stress fields in the undercutter zone of the rock mass and the conditions for the emergence and development of main cracks in the near-cut zones during the cutting process. The accepted phase-energy method of analyzing the process, which most closely matches the structure of the studied process, revealed a more significant, than previously expected, effect on the cutting process, variability of cutting speed and potential energy reserve in the cutter drive. The paper discusses the possibility of purposeful formation of the parameters of elementary bursts. It describes new ways to improve the efficiency of cutting coal and rocks, in particular, reducing the maximum loads and specific energy consumption. It also considers the possibility of reducing the grinding of the rock mass and dust formation.

How to cite: Gabov V.V., Zadkov D.A., Nguyen K.L. Features of elementary burst formation during cutting coals and isotropic materials with reference cutting tool of mining machines // Journal of Mining Institute. 2019. Vol. 236. p. 153. DOI: 10.31897/PMI.2019.2.153
Mining electromechanics and mining equipment
  • Date submitted
    2011-07-10
  • Date accepted
    2011-09-02
  • Date published
    2012-01-01

Test bench for experimental studies of potash ores cutting with a single cutter of mining machines

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The paper examines the process of potash massive fracture with actuating devices of mining machines, having cross cuts, and discusses a test bench to study the influence of cut parameters on the formation of successive elementary spalls making up the cut.

How to cite: Gabov V.V., Shefner A.D., Shishlyannikov D.I., Chekmasov N.V. Test bench for experimental studies of potash ores cutting with a single cutter of mining machines // Journal of Mining Institute. 2012. Vol. 195. p. 245.
Diagnostics and control of technical systems and their elements. New technologie
  • Date submitted
    2007-11-04
  • Date accepted
    2008-01-06
  • Date published
    2008-05-01

Improvement of heat treatment regimes of cutters of road-headers for increase of their wear resistance

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The method is offered which allows to increase the wear resistance of bit bodies for continuous miners by means of their additional full hardening. This results in increasing the bit body hardness from 37-42 HRC up to 49-51 HRC, which must bring to increasing in wear resistance approximately of 25 %. The suggestion has been tested with a batch of bits spec. RKS-2 (РКС-2) in the mines of Vorkuta and have demonstrated an increasing in wear resistance compared with that of the bits which had not been exposed to an additional hardening.

How to cite: Bolobov V.I., Gabov V.V., Zadkov D.A., Tetervak A.V. Improvement of heat treatment regimes of cutters of road-headers for increase of their wear resistance // Journal of Mining Institute. 2008. Vol. 178. p. 170-172.
Diagnostics and control of technical systems and their elements. New technologie
  • Date submitted
    2007-11-20
  • Date accepted
    2008-01-09
  • Date published
    2008-05-01

Application of X-ray fluorescence spectroscopy method for determination of steel grade of rock-destroying tools

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It is shown that X-ray fluorescence method can be utilized to determine composition of steels used for manufacturing the rockbreaking tools. A conclusion is derived that one of the possible cause of low wear resistance of miner bits in «Vorkutaugol» is their bodies manufacturing from the steels, which do not meet the Mining Code specifications.

How to cite: Bolobov V.I., Gabov V.V., Gembitskaya I.M., Ponurova I.K., Aleksandrov M.A. Application of X-ray fluorescence spectroscopy method for determination of steel grade of rock-destroying tools // Journal of Mining Institute. 2008. Vol. 178. p. 173-174.
Technological machinery and equipment of mining and oil & gas industries
  • Date submitted
    2003-07-30
  • Date accepted
    2003-08-18
  • Date published
    2004-02-01

Modular complexes and the formation of design and engineering solutions in coal seam development

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Modern means of complex mechanization of mining operations are effectively used only under favorable conditions. For this reason, the forced restructuring of the coal industries in many countries, which is accompanied by the closure of mines and entire basins, is not possible. We are searching for new alternative means of integrated mechanization of mining operations. Developed modular complexes of selective action are promising for the development of coal seams in difficult mining and geological conditions.

How to cite: Gabov V.V., Loginov A.K., Smirnov M.I. Modular complexes and the formation of design and engineering solutions in coal seam development // Journal of Mining Institute. 2004. Vol. 157. p. 23-25.
Without section
  • Date submitted
    1990-11-10
  • Date accepted
    1991-01-11
  • Date published
    1991-05-01

Система управления модулем фронтального угледобывающего агрегата

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Принципиальная схема агрегата модульного исполнения для фронтальной отработки угольных пластов была разработана на кафедре горной электромеха­ники филиала ЛГИ в г.Воркуте ...

How to cite: Borisov B.M., Gabov V.V., Efimov I.A., Zagrivnyi E.A., Yaskov Y.V. // Journal of Mining Institute. 1991. Vol. 128. p. 121.
Without section
  • Date submitted
    1985-08-30
  • Date accepted
    1985-10-25
  • Date published
    1986-02-01

Датчик скорости перемещения добычного комбайна

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Датчик предназначен для непрерывного измерения с повышенной точностью и последующей регистрацией малых линейных скоростей и ускорений перемеще­ний комбайна. Прибор встроен в корпус типового датчика УПДС ...

How to cite: Tretyakov N.M., Gabov V.V., Tretyakov B.N. // Journal of Mining Institute. 1986. Vol. 108. p. 63.
Without section
  • Date submitted
    1980-10-12
  • Date accepted
    1980-12-09
  • Date published
    1981-04-01

Анализ характера нагрузок очистных комбайнов

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В систематическом контроле ресурса и его использовании в расчетах хозяйственной деятельности технических служб шахт заложен значительный резерв повышения эффективности эксплуатации очистных комбайнов ...

How to cite: Gabov V.V., Okolokulak V.P. // Journal of Mining Institute. 1981. Vol. 87. p. 13.
Without section
  • Date submitted
    1980-10-22
  • Date accepted
    1980-12-11
  • Date published
    1981-04-01

Устройство управления нагрузкой при стендовых испытаниях комбайнов

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В лаборатории горных машин ЛГИ создан стенд и разработана методика испытания комбайнов перед спуском в шахту ...

How to cite: Gabov V.V., Nikitin Y.S. // Journal of Mining Institute. 1981. Vol. 87. p. 36.
Without section
  • Date submitted
    1972-07-06
  • Date accepted
    1972-09-24
  • Date published
    1973-01-01

Методика определения механической характеристики привода подачи добычных машин на испытательном стенде

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Производительность добычных комбайнов во многом зависит от эффективности работы привода подачи, обеспечивающей перемещение машины во время работы и маневровых операций. Сложность конструк­ции, высокий класс точности изготовления и необходимость высокой надежности, особенно при работе в механизированных комплексах, тре­буют тщательной проверки привода подачи в сборе перед спуском ма­шины в шахту. Такая проверка может быть проведена на испытатель­ных стендах. Так, на рудоремонтном заводе им. В. И. Ленина комбината «Тулауголь» весьма тщательно проверяются отремонтированные приво­ды подачи Г-404 ...

How to cite: Kolomiitsov M.D., Gabov V.V., Lorenzo A.F. // Journal of Mining Institute. 1973. Vol. № 1 65. p. 10.