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为提前预防临近采空区侧回采巷道发生的冲击矿压灾害,基于临空区回采巷道冲击破坏机理,提出了降低静载以避开支承应力集中区为原则、削弱动载以增大传播介质衰减指数为原则的临空区巷道优化布置方式,建立了力学模型,理论计算了外错布置的布置参数,并通过数值模拟方法对其进行验证,对比分析了2种不同布置方式的所受动静载情况.结果表明:采用外错布置方式后围岩稳定性好、抗矿震扰动能力强,结合现场工程实践,采用外错布置技术取得了明显有效的防冲效果,实证了其在冲击矿压防治方面的突出性.
In order to prevent the occurrence of rock burst in the mining area adjacent to the goaf in advance, based on the mechanism of impact and failure in the mining gateway in the gob area, the principle of reducing the static load to avoid the stress concentration area is proposed, and the dynamic load is reduced to increase the propagation medium Attenuation Index is the principle of the optimal layout of the roadway in Gudong, the establishment of a mechanical model, the theoretical calculation of the layout parameters of the wrong arrangement, and verify by numerical simulation method, comparative analysis of two different arrangements of the static and dynamic The results show that the surrounding rock with good stability and strong anti-mining and quake-resisting disturbance can be obtained by using the outer-staggered arrangement method. Combining with the field engineering practice, Prominent prevention and treatment of pressure.