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- W2369656010 abstract "Taking Baijiazhuang Mine of Xishan Coal Electricity Group Co.,Ltd.as engineering research object,analyzed damage mechanics properties of non-mining whole coal,having mined upper slice and pillar supporting coal.Connecting with characterizes of different hardness rock parting,damage mechanics equation of three residual coal was established.The result shows that reduce of confining pressure can improve caving characterizes and recovery coefficient of top coal.Based on similar material simulation,aiming at the point,staggered arrangement mining is put forward in control measures,concretely increasing the free face of top coal.This mining can significantly improve coal recovery ratio." @default.
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- W2369656010 date "2010-01-01" @default.
- W2369656010 modified "2023-09-26" @default.
- W2369656010 title "Top coal damage and caving characterizes control of residual coal repeated mining adopted longwall top-coal caving in contiguous seams" @default.
- W2369656010 hasPublicationYear "2010" @default.
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