Passing Scouring Zone Technology in Large Mining Height Support Special Conditions

When the working face with large mining height is under special geological condition, during the advancing process of working face rock loose blasting, support is operated in passive pressure, unreasonable conditions, and it results in unsoldering and deformation of support overall structure and other problems, which seriously restricts the normal mining at working face. How to adopt the reasonable solutions to achieve uninterrupted mining working face is a difficult problem for large mining height face. In the mining process of working face, through taking advance digging small cutting lane and support bracket assembly chamber, removing small scale in Yungang Mine, which can shorten the moving time, recover more valuable resource.