Results 41 to 50 of about 277,436 (279)
Control of Gob-Side Roadway with Large Mining Height in Inclined Thick Coal Seam: A Case Study
Shock and Vibration, 2021 The gob-side roadway of 130205, a large-mining-height working face in the Yangchangwan coal mine, was investigated in terms of the mine pressure law and support technology for large mining heights and narrow coal pillars for mining roadways. The research
Xie Fuxing
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Development of natural underground ore mining technologies in energy distributed massifs [PDF]
, 2019 The object of research is the technology and facilities for underground mining of ores in the disrupted massifs. One of the most problematic places is the formation of man-made voids; which influence the occurrence and redistribution of stress-strain ...
Golik, V. +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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IOP Conference Series: Earth and Environmental Science, 2020 Abstract In terms of the problems of the development height of the “two zones” of overburden in the fully mechanized mining face was difficult to predict, taking the 31303 working face in Chahasu coal mine as an example, methods of empirical formula, leakage of drilling fluid and borehole colour TV were used for prediction and ...
Mingze Du, Fanlong Kong, Donghao Wang
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Особливості формування техногенних родовищ вапняку [PDF]
, 2013 Segregation laws become important in the formation of man-made deposits. The theoretical basis of the physical mechanism of the phenomenon of segregation of the rock mass in the formation of dumps and the storage of minerals or finished products in the
Strilets, O., Pchelkin, G., Mekshun, M.
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Shock and Vibration, 2020 In order to study the changing rules of displacement filed and stress field of overlying strata on isolated pillar with filling mining method, a self-designed model of isolated pillar with an equivalent mining height and a monitoring system of stress is ...
Yang Chen +5 more
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Meikuang Anquan, 2020 There are a lot of coal left in goaf at the both air inlet and outflow sides of large mining height face, where the air leakage is large, and large scope of spontaneous fire takes place easily.
ZHAO Like, ZHANG Xinhai, ZHENG Zhongming
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Modeling the formation of high metal concentration zones in man-made deposits [PDF]
, 2018 Purpose. To study conditions of forming the zones of high metal concentration in metal-containing man-made deposits. To assess the likelihood of metal concentration in the placer core. Methods.
Korniienko, V +4 more
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Meitan kexue jishuThe reserves and production of thick coal seams account for half of the total reserves and production of raw coal in China. By combing the history of thick coal seam mining, we summarize the technology and equipment development practice of thick coal ...
Huijun HAN +5 more
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Optimization of position of the cyclical-and-continuous method complexes when cleaning-up the deep iron ore quarries [PDF]
, 2019 Purpose. An algorithm development for calculating the optimum depth for cyclical-and-continuous method schemes introduction when cleaning-up the deep iron ore quarries. Methods. When developing an algorithm for calculating the optimum depth for cyclical-
Adamchuk, A +5 more
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