下分层回采巷道位置的数值模拟研究

Numerical Simulation Research on Position of Lower Mining Roadway

通过对常村煤矿地质条件和开采技术条件的研究,确定了巷道系统布局中主控冲击因素。针对下分层工作面内错式及跨错式2种布置方式,运用FLAC^(2D)软件数值模拟研究上分层工作面在回采后应力的分布情况,确定科学合理的错距值。结果表明,下分层巷道采用合理的错距时,能有效减少资源浪费,减弱冲击矿压威胁。

According to the research on geological and coal mining technical conditions in Changcun Coal Mine,the main impact factors of roadway layout system can be determined.Aiming at two kinds of arrangements of the lower layered face internal fault type and the fault type,the FLAC numerical simulation software was applied to analysis the stress distribution after the higher slice working face extracted,and to determine the reasonable offset.The results show that when roadway adopts the reasonable offset,the resource waste can be effectively reduced,and rock-burst threat will be weakened.