褶曲断层区废矸置换巷围岩控制技术

Surrounding Rock Control Technology for Waste Gangue Replacement Roadways in Fold and Fault Zones

为了解决孤岛褶曲断层区废矸置换巷道的支护难题,分析了复杂叠加应力场、煤岩层性质及巷道空间位置对巷道围岩变形破坏的影响,并针对其破坏特征提出了相应的支护方案。现场实践表明,高预应力桁架锚索及锚杆索联合支护技术,能够有效控制废矸置换巷围岩变形,实现了安全置换煤炭资源的目的。

To solve the supporting difficulties of waste gangue replacement roadways in island fold and fault zones,this paper analyzed the influence of complex stress superimposition field,coal strata,and roadway position on the deformation and failure of surrounding rock and proposed a corresponding supporting plan.The field practice shows that the combined supporting technology with high prestressed truss and anchor cable can effectively control the surrounding rock deformation of the waste gangue replacement roadways to realize the safe replacement of coal resources.