摘要
根据常村煤矿的采掘工艺和地质条件,分析了其冲击矿压频繁发生的原因,通过数值模拟研究了工作面开采及巷道开挖前后的应力分布情况,结果表明,在工作面和巷道开挖过后底板的水平应力是不断增加的,而21132工作面进风巷在采掘过程中冲击矿压频繁发生的原因是由于其布置在了应力叠加区域。
Based on mining and geological conditions at Changcun coal mine,the author analyzed the reasons of rock burst happening frequently there.Through numerical simulation,stresses distribution at working faces and roadways before and after excavation is researched.The result indicates that,floor＇s horizontal stress of the working faces and roadways is constantly increasing after excavation,and reasons of happening rock burst frequently during excavation of the down gate at 21132 mining face is that,the gate is excavated in the stress superposition area.
出处
《中国煤炭》
北大核心
2011年第1期102-104,共3页
China Coal
关键词
冲击矿压
数值模拟
应力叠加
常村煤矿
Rock burst
Reason
numerical simulation
stress superposition
Changcun coal mine
