工作面由放顶煤开采改为顶分层开采的实践

Practice on Mining Method Changing from Top Coal Caving Mining to Top Slice Mining

鹤壁八矿31011工作面对应地面位于扒厂西,地表大部分为耕地。为了防止地表沉陷影响公路立交桥下沉变形破坏,工作面由放顶煤开采改为顶分层开采,以减缓地表沉陷速度。

The 31011 working face lies to the west of the PaChang（扒厂） , most of the earth surface over 31011 working face is tilled land. To avoid the deformation of the overpass sinking caused by surface subsidence,mining method was changed from the top coal eaving to the top slice mining, in order to slow down the speed of surface subsidence.