【摘 要】
：
Coal and gas often extrudes when excavateing the No.3 coal seam in Xinjing mine,which threatens the safety of production and economic benefits.The main contents can be summarized as follows: geologica
【机 构】
：
Faculty of Earth Resources,China University of Geosciences,Wuhan 430074,China;Institute of Geologica
【出 处】
：
2nd International congress on advanced materials(AM2013)第二届国
论文部分内容阅读
Coal and gas often extrudes when excavateing the No.3 coal seam in Xinjing mine,which threatens the safety of production and economic benefits.The main contents can be summarized as follows: geological structure,coal block texture,burial depth,gas pressure,gas content,coefficient of coal seam sturdiness,initial velocity of gas emission and comprehensive indexes.
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