木城涧煤矿异常条件下回采底分层空间模拟试验研究

The simulating experiment of extracting sublayer coal in Muchengjian colliery

通过对北京矿务局木城涧煤矿不具备常规条件下十槽煤底分层的相似材料模拟试验研究 ,证明了回采上分层时顶板冒落情况和矿压显现规律 ,初步探明了留与不留煤皮假顶情况下 ,回采下分层时顶板岩层二次失稳情况和矿压显现规律 ,为类似条件下开采底分层制定合理的回采方案。

By using simulating experimental means of similar material,it has indicated the investigation of extracting sublayer coal under abnormal condition and testify caving conditions when extracting toplayer coal in Muchengjian Colliery of Beijing Coal Mining Burea.It has studied the top roof rock seam destabilization and mine pressure showing law when extracting sublayer coal artifical coal seam of top coal remaind and top coal mined.