唐山沟煤矿11^(-2)号煤层主要大巷加固支护技术探析

The Reinforcement and Support Technology for the Main Entry of No.11^(-2) Coal Seam in the Coal Mine of Tang ShanGou

针对唐山沟煤矿需要加固支护的11-2号煤层主要巷道现状,应用钻孔探测技术取得顶板岩层离层松动范围,对跨采影响段和非跨采影响段分别制定了符合巷道围岩情况的锚、网、索联合支护技术,进行巷道加固支护后,保证了8号煤层开采安全。

According to the status of No. 11^-2Coal seam in need of reinforced supporting in Coal Mine of Tang Shah Gou, its complex roof conditions were analyzed. Through the drilling probing technique, the loose range of the separation layer for the rock stratum of the roof was obtained, and the joint supporting technology of using anchoring, metallic network and anchor wire was adopted cording with the circumstance of the tunnel＇ s country rock of the impact section on the cross - mining and non - cross - mining, it enhances the stability of the country rock of the tnnnd, ensures mining safety of the No. 8 coal seam.