【Key words】 deep rock; dynamic disturbance; lateral pressure coefficient; unstable failure; numerical simulation
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unstable heart failure 稳定性心衰
If the post-peak stiffness of compressive stress-compressive displacement curve for the monitored element at loading end of plane strain specimen is high enough,the snap-back(unstable failure) of the system occurs.
当位于试样加载端上的单元的压缩应力-压缩位移曲线的峰后刚度足够大时，系统就会发生弹性回跳现象，即失稳破坏。
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Both unstable failure of coal contained gas and the coal and gas outburst are key problems in the process of coal mining.
含瓦斯煤失稳破坏和煤与瓦斯突出是煤矿开采过程中急需解决的关键问题。
The results show that the deformation stability theory provides practical and effective theory and method for the global stability assessment and unstable failure analysis of cavern group.
研究表明，变形稳定理论为库群整体稳定性评价和失稳破坏分析提供了一套实用而有效的理论和方法。
The paper numerically demonstrates the pillar failure process-from micro crack to macro crack to unstable failure and studies the relations between limit load and statistical mean strength.
分析结果再现了矿柱从微破裂产生到宏观裂纹形成、最后产生失稳破坏的全过程，并研究了统计平均强度与极限承载力的关系。
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