Results 31 to 40 of about 1,100 (178)
Advances in Civil Engineering, 2020 During the mining of the shallow-buried and close-distance multiple coal seam, the rheological failure of the surrounding weakly cemented soft rock of the roadway in the lower coal seam under the concentrated stress is very rare.
Wenkai Ru +6 more
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Prevention and control technology and goaf spontaneous combustion index in distance coal seams
Meikuang Anquan, 2022 In order to study the spontaneous combustion law of close distance easy spontaneous combustion coal seams, taking the mining face of Bulianta Mine No.22 coal seam 3# panel as an example, collected No.22 coal seam samples of Bulianta Mine, three particle ...
GUO Haixiang
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Study on reasonable offset of mining roadway under close distance coal seams goaf of rock burst mine
Meikuang Anquan, 2021 Aiming at the situation that the top coal of the close distance coal seams is goaf and the remaining 30 m coal pillar, taking the 2-1 coal seam and 2-2 coal seam of Hulusu Coal Mine as the research background, the mechanical model of the upper coal goaf ...
DING Guoli, YU Huihua, SU Shijie, SHI Chaohong, LIU Chenyang
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Study on the Law of Fracture Evolution under Repeated Mining of Close-Distance Coal Seams [PDF]
Energies, 2020 The western region of China is rich in mineral resources. The vigorous development of mineral resources has exacerbated the environmental and safety problems in the region. One of the important links to solve this problem is to control the development laws and distribution characteristics of the overburdened cracks in the mining of this area.
Feng Cui +4 more
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Development characteristics of the rock fracture field in strata overlying a mined coal seam group
PLoS ONE, 2022 The fracture development of the overlying strata after coal mining is an important guarantee of efficient gas drainage. In order to explore the fracture evolution characteristics close to a mined coal seam group, the F15.16−24130 working face in the ...
Yun Qi +4 more
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Advances in Civil Engineering, 2021 In Northwest China, rainfall is low, water resources are scarce, and the ecological environment is fragile. For shallow-buried and close-spaced coal seams with a thickness of upper coal bed >60∼70 m, the water-conducting fissures of the overlying rock ...
Zhiyuan Jin, Tao Peng
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Gong-kuang zidonghuaResearch on optimal coal drawing parameters for working faces with significant variation in seam thickness, where the thickness exceeds the standard mining height in close-distance coal seams, has been limited.
ZHANG Wei +4 more
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Study on Stability of Stope Surrounding Rock under Repeated Mining in Close-Distance Coal Seams [PDF]
Geofluids, 2022 In order to study the influence of roof stress and fracture distribution characteristics on the stability of stope surrounding rock under repeated mining in close-distance coal seams, the research background of this paper is the close-distance coal seam mining of a mine in Guizhou province, China.
Qiang Li, Guiyi Wu, Dezhong Kong
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Geofluids, 2022 This research is aimed at exploring the evolution of overlying strata structure and the ground pressure in the working face mining of close-distance coal seams. By taking the Xiashijie Coal Mine as an example, the direct relationship between the rotation
Yupu Zhou +5 more
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Shock and Vibration, 2020 Numerical simulations have often been used in close-distance coal seam studies. However, numerical simulations can contain certain subjective and objective limitations, such as high randomness and excessively simplified models.
Zhuoyue Sun +5 more
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