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深部冲击地压巷道的防治问题已成为目前急需解决的难题,根据冲击地压巷道冲击破坏机理及特征,提出了基于卸压-支护协同控制的强弱强控制原理,为了减小冲击震源能量,通过在煤岩体内部设置破碎体来耗散冲击波能量,同时加强巷道围岩的支护结构强度,两者协同作用来达到控制冲击对巷道的破坏。对研究成果进行了现场应用,根据某矿的实际情况,采用了锚网+“O”型棚联合支护结构进行了现场工业性试验,试验期间发生多次冲击地压事件,双层支护结构柔性变形,使冲击能量得到释放,支护体系基本保持完好,很好的控制了冲击地压灾害。
The prevention and control of roadway with deep impact and pressure has become an urgent problem to be solved urgently. Based on the mechanism and characteristics of impact and destruction of roadway under impact ground pressure, a strong and weak control principle based on cooperative control of pressure relief and support is proposed. In order to reduce the energy of impact source , The crushing body is arranged in the coal and rock body to dissipate the energy of the shock wave and strengthen the supporting structure strength of the surrounding rock of the roadway at the same time so as to achieve the effect of controlling the impact and damaging the roadway. The field application of the research results was carried out. According to the actual situation of a mine, an on-site industrial test was carried out with the combined support structure of bolting net + “O” type shedding. During the test, multiple rock burst events occurred, The supporting structure is flexibly deformed so that the impact energy is released, and the supporting system remains basically intact, so that the impact and ground pressure disaster are well controlled.