“O”支架与壁后充填注浆技术在溜煤眼修复中的应用

The Application of"O"Support and Backwall Filling Grouting Technology in the Repair of Coal Slipping Eyes

针对端氏煤矿22051下副巷溜煤眼内壁片帮严重,影响工作面生产安全问题,提出“O”形U型钢支架套棚+喷浆+壁后充填水泥砂浆加固技术方案。加固后溜煤眼内部牢固可靠、淋水减少,工作面生产期间能正常存煤、出煤,保障了煤矿生产安全。

In view of the serious wall spalling of the coal slipping eye in the 22051 lower auxiliary roadway of Duanshi Coal Mine,which affects the production safety of the working face,a O-shaped U-shaped steel support shed+spraying+filling cement mortar behind the wall reinforcement technology scheme is proposed.After reinforcement,the interior of the coal slipping eye is firm and reliable,with less water leakage,and the coal can be stored and discharged normally during the production period of the working face,ensuring the safety of coal mine production.