断层带破碎区巷道变形破坏规律与控制分析

介绍了袁店二矿F7大断层的发育情况,采用大型岩土三维软件FLAC3D分别对无断层岩体与有断层岩体2种情况下的巷道变形破坏规律进行了对比分析,结果表明,断层破碎区内巷道的应力卸压区范围更大,从而位移变化也较大,并根据其变形破坏规律,采用了全断面"U"型钢支护方式对巷道进行加强支护,监测结果表明,此支护方式能较好的控制断层破碎区内巷道围岩,保持了巷道围岩的稳定性。

Roadway Deformation Failure law and Control Analysis in Fault Fracture Zone

The developmental condition of F7 major fault in Yuandian No.2 coal mine is introduced in this paper.The roadway deformation failure law between no fault rock and fault rock is analyzed contrastively by using large-scale three-dimensional geotechnical software FLAC3D.The results show that the range of stress relief zone is bigger and displacement change is larger in fault fracture zone roadway;according to its deformation failure law,whole section "U"-steel support way is used to strengthen the roadway support.Monitoring results show that this support method can better control surrounding rock of roadway in fault fracture zone and maintain the stability of roadway.