联合支护技术在巷道过断层带中的应用

Application of Joint Support Technology in Cross Fault Belt of Roadway

针对长春兴煤矿307回风顺槽掘进过F9断层时顶板局部出现冒漏切顶板原锚杆支护失效现象严重,通过技术研究合理分析原巷道顶板支护形式,以及原支护在断层带处支护存在的弊端,并根据实际生产情况提出了"钢棚+注浆"联合支护,通过实际应用效果来看,采取联合支护技术可有效控制断层带处不稳定围岩变形、破碎现象。

In view of the serious failure phenomenon of the original bolt support in the roof of 307 return air trench tunneling through the F9 fault in Changchun Xing Coal Mine, the original roadway roof support form and the disadvantages of the original support and the disadvantages of the original support at the fault zone are put forward.According to the actual production situation, the joint support of "steel shed grouting" is put forward. According to the practical application effect, the joint support technology can effectively control the deformation and breakage of unstable surrounding rock at the fault zone.