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V. V. Gabov
V. V. Gabov
Saint Petersburg State Mining University
Saint Petersburg State Mining University

Articles

Geotechnical Engineering and Engineering Geology
  • Date submitted
    2021-12-19
  • Date accepted
    2022-07-26
  • Date published
    2022-11-10

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

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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. (2022). Increasing the content of coarse fractions in the mined coal mass by a combine using paired cuts. Journal of Mining Institute, 257, 764-770. https://doi.org/10.31897/PMI.2022.66
Mining
  • Date submitted
    2018-07-10
  • 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. (2019). Features of elementary burst formation during cutting coals and isotropic materials with reference cutting tool of mining machines. Journal of Mining Institute, 236, 153. https://doi.org/10.31897/pmi.2019.2.153
Mining electromechanics and mining equipment
  • Date submitted
    2016-11-24
  • 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. (2012). Test bench for experimental studies of potash ores cutting with a single cutter of mining machines. Journal of Mining Institute, 195, 245. Retrieved from https://pmi.spmi.ru/index.php/pmi/article/view/6146
Diagnostics and control of technical systems and their elements. New technologie
  • Date submitted
    2017-01-17
  • Date published
    2008-05-01

Усовершенствование режимов термической обработки резцов проходческих комбайнов с целью повышения их износостойкости

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Предложен способ повышения износостойкости корпуса резцов проходческих комбайнов, заключающийся в их дополнительной полной закалке. В результате закалки твердость корпуса резцов повышается с 37-42 HRC до 49-51 HRC, что должно привести к повышению износостойкости примерно на 25 %. Предложение реализовано на партии резцов марки РКС-2. Резцы прошли испытание на шахтах Воркуты, где показали повышенную износостойкость по сравнению с резцами, не прошедшими дополнительную закалку.  

How to cite: Bolobov , V. I., Gabov , V. V., Zadkov , D. A., & Tetervak , A. V. (2008). Journal of Mining Institute, 178, 170. Retrieved from https://pmi.spmi.ru/index.php/pmi/article/view/7222
Diagnostics and control of technical systems and their elements. New technologie
  • Date submitted
    2017-01-17
  • Date published
    2008-05-01

К применению метода рентгенофлуоресцентной спектроскопии для определения марки стали породоразрушающего инструмента

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Показана возможность использования рентгенофлуоресцентного метода анализа для установления состава сталей, применяемых для изготовления породоразрушающего инструмента. Сделан вывод, что одной из возможных причин низкой износостойкости резцов очистных комбайнов в объединении «Воркутауголь» является изготовление их корпусов из сталей, не отвечающих по составу нормативным документам.

How to cite: Gabov , V. I., Gabov , V. V., Gembitskaya , I. M., Ponurova , I. K., & Aleksandrov , M. A. (2008). Journal of Mining Institute, 178, 173. Retrieved from https://pmi.spmi.ru/index.php/pmi/article/view/7223
Technological machinery and equipment of mining and oil & gas industries
  • Date submitted
    2017-02-15
  • 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. (2004). Modular complexes and the formation of design and engineering solutions in coal seam development. Journal of Mining Institute, 157, 23-25. Retrieved from https://pmi.spmi.ru/index.php/pmi/article/view/8859
Without section
  • Date submitted
    2017-04-10
  • 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., & Yas’kov , Y. V. (1991). Journal of Mining Institute, 128, 121. Retrieved from https://pmi.spmi.ru/index.php/pmi/article/view/10147
Without section
  • Date submitted
    2017-05-17
  • 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: Tret’yakov , N. M., Gabov , V. V., & Tret’yakov , B. N. (1986). Journal of Mining Institute, 108, 63. Retrieved from https://pmi.spmi.ru/index.php/pmi/article/view/10519
Without section
  • Date submitted
    2017-06-19
  • 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. (1981). Journal of Mining Institute, 87, 13. Retrieved from https://pmi.spmi.ru/index.php/pmi/article/view/10900
Without section
  • Date submitted
    2017-06-19
  • 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. (1981). Journal of Mining Institute, 87, 36. Retrieved from https://pmi.spmi.ru/index.php/pmi/article/view/10905
Without section
  • Date submitted
    2017-12-18
  • 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. (1973). Journal of Mining Institute, 65(1), 10. Retrieved from https://pmi.spmi.ru/index.php/pmi/article/view/11656