Results 61 to 70 of about 1,698,756 (161)
Distribution of spontaneous combustion three zones and optimization of nitrogen injection location in the goaf of a fully mechanized top coal caving face. [PDF]
PLoS One, 2021 Qi Y, Wang W, Qi Q, Ning Z, Yao Y.
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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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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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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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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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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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Longwall Top Coal Caving Mechanism and Cavability Assessment
, 2018 Longwall Top Coal Caving (LTCC) is considered one of the most efficient methods for mining thick coal seams. Compared to other thick seam mining methods, LTCC can offer significantly reduced operational costs, high production and resource recovery rates, and improve mine safety.
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Granular MatterAbstract Understanding the migration trajectory characteristics of top coal in longwall top coal caving (LTCC) is crucial for studying the flow properties of granular top coal, drawing laws, and optimizing the coal drawing process. To monitor the migration trajectory of top coal during the drawing process, an experimental platform was developed
Zhining Zhao +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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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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