采掘工作面冲击地压防治

Prevention and Control on Rock Burst in Mining Face

为了能够更好地防治冲击地压,通过分析现有防治冲击地压的技术方法,提出了集束卸压孔防治冲击地压的方法。在巷道周围或工作面顶底板附近,打集束卸压孔,大量取出岩煤,在垂直钻孔的围岩断面上形成一个呈多孔状的弱面,在空间中形成一系列空岩管覆盖或围绕在一定距离的巷道周围或工作面顶底板中。当集中应力作用于巷道围岩时,首先破坏该弱面结构消耗能量,破坏后的该弱面会中断或减弱应力传递,并导致应力集中区向两侧深部岩体转移(采空区或较安全位置),保护巷道不产生或减少两帮挤进和底鼓。当发生地压冲击时,集中应力主要作用于两侧深部煤岩体,从而保护采掘巷道和局部工作面,确保人员设备安全与生产连续进行。

In order to better control the impact of rock burst, through analysing the technology method of existing prevention and control of the rock burst, puts forward the prevention and control of the rock burst of cluster pressure relief hole. In the roadway surrounding or working face roof and floor nearby, drilling cluster pressure relief hole, take out a large rock coal, in a vertical borehole surrounding rock section is formed on a porous weak surface, in the space formed a series of empty rock pipe cover or surround around some distance roadway or in the roof and floor of the working face. When happen the rock burst, concentrated stress mainly act on the bilateral deep coal and rock mass, thereby protect the tunnel and the local working face, ensure safety of staff and equipment, continuous production.