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为有效防治“震-冲”型冲击地压,根据矿震与冲击地压的关系建立煤岩“震-冲”动力系统模型。以此作为研究的基本模型,探讨“震-冲”型冲击地压的发生机制和判据。采用数值模拟方法研究强矿震在工作面附近产生的动力效应。提出“震-冲”型冲击地压的防治对策。结果表明,“震-冲”型冲击地压的发生机制是在矿震扰动下,煤岩应力瞬间进入塑性软化阶段,煤岩体积聚能量与破坏消耗能量的差能增大,在满足冲击破坏的刚度条件时,发生强烈的冲击地压事故。分别控制矿震震动源区、矿震震能传播路径和冲击源区,能大大减弱或消除发生“震-冲”型冲击地压的危险性。
In order to effectively prevent and control the “shock - red” type rock burst, a dynamic model of coal rock “seismic - impulse” is established according to the relationship between mine and rock burst. As the basic model of this study, the mechanism and criteria of “shock - red” type rock burst were discussed. The numerical simulation method is used to study the dynamic effect of strong mine shock near the working face. Preventive measures of “shock - red” type rock burst are put forward. The results show that the mechanism of rockburst is that under the disturbance of mine earthquake, the stress of coal and rock momentarily enters the plastic softening stage, and the difference between the accumulated energy and the energy consumed in destruction can increase, Impact damage to the stiffness conditions, a strong impact on the ground pressure accident. Separately controlling the source zone of mine earthquake and earthquake, the propagation path of mine epicenter energy and the source region of impact can greatly reduce or eliminate the danger of rock burst.