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为建立更加合理的冲击倾向性判断指标,以能量理论为基础,分析了煤岩冲击倾向性与弹性变形能释放速度的关系,并对现行的冲击倾向性指标的特点及其不足进行了分析,在此基础上提出了新的冲击倾向性判定指标—剩余能量释放速度指数,该指数从能量与破坏时间的角度反映了煤岩的冲击倾向性,因此可以反映冲击倾向性的大小。
In order to establish a more reasonable indicator of impact propensity, based on the energy theory, the relationship between the impact propensity of coal and rock and the release rate of elastic deformation energy was analyzed. The characteristics and shortcomings of the current impact propensity index were analyzed. On this basis, a new index of determination of impact propensity - the residual energy release rate index - is proposed, which reflects the impact propensity of coal and rock from the energy and destructive time, and thus reflects the magnitude of the impact propensity.