Results 31 to 40 of about 1,747 (203)
Numerical Simulation of Coal Wall Cutting and Lump Coal Formation in a Fully Mechanized Mining Face [PDF]
International Journal of Coal Science & Technology, 2020 Abstract It is difficult to accurately calculate the lump coal rate in a fully mechanized mining face. Therefore, a numerical simulation of the coal wall cutting process, which revealed the crack expansion, development, evolution in the coal body and the corresponding lump coal formation mechanism, was performed in PFC2D.
Yong Yuan +3 more
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Effect of Face Length in Initial Mining Stage of Fully Mechanized Top-coal Caving Face With Large Mining Height [PDF]
Geotechnical and Geological Engineering, 2021 Abstract Based on the field measurement of the end resistance of the support during the initial weighting of the basic roof and the macroscopic mine pressure behavior during the weighting period of 101,22211,103 and 301 fully mechanized caving face in Changchun Xing Coal Mine, the mine pressure law of the working face is summarized and compared,
Jianhang Wang +4 more
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Applications of Machine Vision in Coal Mine Fully Mechanized Tunneling Faces: A Review
IEEE Access, 2023 The realization of intelligent mining is the only method for realizing high-quality development in the coal industry. As the forefront working link in mine production, achieving automatic roadway tunneling control is key to improving production efficiency, enhancing intelligence, and reducing accident rates at fully mechanized tunneling working faces ...
Yuxin Du +4 more
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Strata behavior at fully-mechanized coal mining and solid backfilling face [PDF]
SpringerPlus, 2016 Taking Ping Dingshan Coal Mine Group 12 as an example, this paper explains the system layout, key equipment and backfilling technology in detail. It probes into the characteristic of rock strata movement behavior and surface deformation above the gob area through in-site measurement method. The results show that as the overburden strata are effectively
Yin, Wei +3 more
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Meikuang Anquan, 2023 In recent years, most of the coal mines in Zhungeer Coalfield have entered the mining of the second main coal seams, such as 6#, 10# and 11#, with an average thickness of more than 10 m, so most of the coal mines use fully mechanized caving mining ...
Hua NAN, Zhuoying WANG
doaj +1 more source
Shock and Vibration, 2021 To study the problems of dynamic load pressure and frame pressure caused by the concentration of stress by coal extraction pillars during the mechanized short-distance mining of goaves in shallow coal seams, a frame pressure accident, in the Shendong ...
Haifeng Zhou +3 more
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Gong-kuang zidonghua, 2020 Taking transparent coal seam, transparent fully-mechanized mining equipment and transparent decision-making and control as core, concept of intelligent mining based on transparent longwall face was put forward, namely based on enhanced geological ...
WANG Feng
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Gong-kuang zidonghua, 2020 Due to the difference between fully-mechanized caving face and single stoping process face, there would be a big error in predicting gas emission rate on fully mechanized caving face by use of AQ 1018-2006 The Predicted Method of Mine Gas Emission Rate ...
WANG Xiaopeng
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Cooperative control technology of shear and hydraulic support on fully-mechanized coal mining face
Gong-kuang zidonghua, 2020 Aiming at low cooperative control efficiency of shearer and hydraulic support on fully-mechanized coal mining face, a cooperative control technology of shearer and hydraulic support on fully-mechanized coal mining face was proposed based on technologies ...
LIU Qing +3 more
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Sudden change mechanism of mine pressure in fully mechanized caving face and its countermeasures
Meikuang Anquan, 2022 In view of the sudden change of mine pressure in 226 upper 02 fully mechanized caving face of Huangyuchuan Coal Mine, the mechanism and countermeasures of sudden change of mine pressure in fully mechanized caving face are studied by using the methods of
LI Yong, WANG Zhuoying
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