Results 81 to 90 of about 1,416 (183)
Gong-kuang zidonghuaThis paper analyzes the current status and existing issues in the control technology of surrounding rock and intelligent top coal caving technology for thick and ultra-thick coal seams in fully mechanized caving faces.
PANG Yihui +4 more
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Characters Evaluation of Ground Pressure in Fully Mechanized Top Coal Caving Face in Soft Coal Seams
, 2011 Based on the big thickness, low stiffiness and other characters of No. 8 coal seam in Huaibei mining area, the moving laws of top coal seam and roof, and distribution law of ground pressure were studied under the fully mechanized top coal caving.
Yang Li, Xiao Hua Wu, Wei Dong Pan
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矿业科学学报The height of water-conducting fractured zone is an important indicator for ensuring safe mining of coal resources under water bodies. In view of the problems and deficiencies to quote empirical formula for top coal caving in thick coal seams, the basis ...
CUI Ximin +9 more
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MATEC Web of Conferences, 2015 According to the characteristics of the 1-2 coal seam of Shangwan coal mine 4th panel, this research analyzed the feasibility of sublevel caving hydraulic support in the fully-mechanized mining face through estimation method and numerical simulation ...
Liu Yingjie, Wang Xiaomou
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Top coal caving mining technique in thick coal seam beneath the earth dam
, 2017 It is important to study the mining technology under structures for raising the coal resources recovery ratio. Based on the geological and mining conditions, the top coal caving harmonic mining technique in thick coal seam beneath the earth dam was put ...
Yi Tan, Wenbing Guo, Erhu Bai
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Research progress on intelligent coal caving theory and technology
Gong-kuang zidonghuaThe longwall top-coal caving technology is an effective method for extracting thick and ultra-thick coal seams, and it has become a hallmark technology in China's coal mining industry.
WANG Jiachen +4 more
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Improving coal recovery from longwall top coal caving
, 2014 This paper develops a series of methodologies to improve the recovery rate from longwall top coal caving. Cavability of top coal is the most essential indicator to estimate the recovery rate.
Gong, Y., Ghosh, Apurna
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Meitan kexue jishuIn order to explore the top coal release law of the fully mechanized top coal caving face under different inclination angles, taking the 0291 fully mechanized caving face of Tangshan Mine as the research background, a comprehensive research approach ...
Guanghua ZOU +5 more
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Mining Safety of Longwall Top-coal Caving in China
, 1999 Longwall top-coal caving technology has developed rapidly in China, in recent years. The application of longwall top-coal caving can double both the productivity and the efficiency of a working face and reduce the cost of production by 30 to 40%.
Zhai, Minghua, Wu, Jian, Qin, Yueping
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Behaviors of overlying strata in extra-thick coal seams using top-coal caving method
, 2016 Accidents such as support failure and excessive deformation of roadways due to drastic changes in strata behaviors are frequently reported when mining the extra-thick coal seams Nos.
Yu, Bin, Bin Yu
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