Results 11 to 20 of about 1,364 (186)
The Safety Guarantee Technology of Extra-thick Coal Seam Mining in Tashan Coal Mine
Procedia Engineering, 2011 AbstractIn recent years, a series of gas and spontaneous fire prevention technologies are summarized by Tashan coal mine of Datong Coal Mine Group CO.,LTD, which are suitable for extra-thick coal seam mining of carboniferous period through collaborative investigation of industry-university-institute and engineering practice.
Yongping, Wu
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Application of intelligent top-coal caving technology in overlying aquifer protection of extra-thick coal seam [PDF]
Meitan kexue jishuThe grassland areas in eastern Inner Mongolia and northern Xinjiang are rich in coal and groundwater resources. The mining fissures formed by high-intensity coal mining are easy to lead to the strong water-rich aquifer, and it is very easy to cause the ...
Weixuan CHENG +5 more
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Failure Mechanism and Risk Evaluation of Water Inrush in Floor of Extra-Thick Coal Seam
Water (Switzerland)In this paper, we investigate the evolution characteristics of floor failure during pressured mining in extra-thick coal seams. A mechanical expression relating floor failure depth to seam thickness is established based on soil mechanics and mine pressure theory.
Min Cao, Shangxian Yin
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Water Formation and Inrush Risk of Overburden Strata for Extra-thick Coal Seam Mining
Meikuang Anquan, 2020 Based on the analysis of the hydrogeological data of the first mining area in Zhaoxian Coal Mine, by using the research methods of theoretical analysis, similar material test and numerical simulation, the separation layer of overburden strata and water ...
ZHANG Peisen, YAN Fenqian, SUN Yanan, WU Junda
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Effect mechanism of strata breakage evolution on stope deformation in extra-thick coal seams
Alexandria Engineering Journal, 2022 The mining of extra-thick coal seams features severe deformation of the stoping roadway and section coal pillars due to the large mining thickness of the coal seams and the intense movement of the overlying strata.
Cunli Zhu +5 more
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Applied SciencesChannel wave seismic activity often occurs with thin and medium-thick coal seams being the main target layer. To address the problem of channel wave applicability detection in extremely thick coal seams, the propagation and identification characteristics
Tao Ding +5 more
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Surrounding rock support technology of extra thick coal seam roadway under the influence of mining
Meikuang Anquan, 2021 In view of the difficulty of surrounding rock support in the extra thick coal seam roadway affected by twice mining in Suancigou Coal Mine, the deformation and failure law of surrounding rock in the extra thick coal seam roadway under the influence of ...
LYU Kun
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Energies, 2022 Gas disasters, such as coal and gas outburst and gas overflow, always occur during the mining of the steep and extra-thick coal seam in the horizontal, fully mechanized, top coal slice caving (HFMTCSC) method. To solve these issues and guarantee the safe
Hao Zhang +4 more
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Geofluids, 2021 The Datong mining area is a typical double system coal seam mining area in China, where the Jurassic and Carboniferous coal seams are mined simultaneously. The upper Jurassic coal seam has been largely mined, leaving a large amount of gob area.
Haixiao Lin +4 more
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Shock and Vibration, 2021 Roadways in thick coal seams are widely distributed in China. However, due to the relatively developed cracks and brittleness of coal, the support failure of thick-coal-seam roadways frequently occurs. Therefore, the study of bolt failure characteristics
Zhe Xiang +6 more
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