摘要
本文通过数值模拟计算及煤岩实验分析,较详细地介绍了城子矿—250米水平八层煤西巷呆滞煤柱开采可行性。该煤柱尚有一定的流变现象,但其四周存在着较高的应力集中地段,它是冲击地压显现的危险区域,在回采中应采取切实可行的措施加以防治。
Through the calculation of numerical simulation and analysis on the experiments of coal and rock, the paper has in detail introduced the practicable degree of mining placing idle pillars at level -250m at west heading in coal seam 8 in Cheng Zi mine. The pillars still have some flow strain appearances, but there is a section of an area of stress concentration around the pillars. The section is a dangerous area of appearing rock-burst. In the process o the extraction the practicable measures must be taken to prevent and remedy rock-burst.
关键词
煤矿
层煤
巷道
煤柱
开采
the finite element method
the effect of flow strain
The strain matrix mechanical parameter
rock-burst
