深部矿井复合顶板应力分析及支护对策

Stress Analysis and Support Countermeasures of Deep Mine Composite Roof

为有效解决岳城煤矿1308工作面复合顶板支护失效、应力测试困难问题,对复合顶板围岩结构进行了受力分析和数值模拟分析,并针对性提出支护方案。对主动支护区域外复合岩层调小锚杆锚索排距至1000mm,对主动支护区域内采用顶板全锚索支护,有效保证了煤帮变形的控制需要。

In order to effectively solve the problem of composite roof supporting failure and stress test difficulty in 1308 working face of Yuecheng Coal Mine,the stress analysis and numerical simulation analysis of the surrounding rock structure of composite roof are carried out,and the supporting scheme is put forward.For the composite strata outside the active support area,the distance between the anchor cable and the anchor cable is reduced to 1000mm,and for the active support area,the roof full anchor cable is used to support,which effectively guarantees the control of the deformation of the coal wall.