摘要
露天边坡下布置大巷及其围岩稳定性研究,是露井联采必须解决的技术问题。本文以平朔矿区典型的露井联采矿井——安家岭二号井为分析对象,采用现场观测、数值模拟等手段,对安家岭露天矿北帮下布置的4#煤二采区三条采区大巷围岩稳定性进行研究,得出了大巷围岩变形破坏的主应力为水平主应力,大巷变形破坏以平行工作面方向的巷道变形破坏为主,大巷破坏顺序是先里后外的递进过程,大巷围岩破坏特征是帮破坏为主。同时研究表明,工作面停采线是决定大巷围岩稳定的关键因素。
Under the open slope, the roadway layout and Stability of rock is well exposed in the mining technical issues must be resolved in the open-underground mining well. Based on the typical open-under- ground Anjialing 2nd coal mine in Pingshuo mining area , the stability of three mining area Roadway surrounding rock of the NO. 4 mine seam under the North slope of Anjialing open pit is researched by the field observations, numerical simulation, and other means. According the research, we found that the Primary Stress Direction of roadway deformation damage is horizontal stress. Roadway deformation and failure parallel to the direction of the main roadway deformation and damage; the roadway damage in the first sequence, after the progressive process of destruction ;surrounding rock damage of roadway is characterized mainly slope damage. Therefore, the stop line is the key to stability of surrounding rock .
出处
《中国矿业》
北大核心
2008年第8期59-62,共4页
China Mining Magazine
关键词
露井联采
边坡下采区大巷
围岩稳定
停采线
rds
open-underground mining
the mining area roadway under slope
surrounding rock stability
stop Line
