CHINA MINE ENGINEERING

In order to realize the safe mining, 501101 fully mechanized top coal caving face passing through DF27 fault is taken as the engineering background, it is proposed to reinforce the surrounding rock of fault fracture zone by advanced grouting in the mining roadway and auxiliary grouting in the working face, and the grouting reinforcement scheme is designed. After field application, the advancing speed of working face is kept at 6m/d，the roof and coal wall keep stable when the working face passes through the fault. The grouting reinforcement scheme not only does not affect the working face, but also creates good conditions for the working face.