1. College of Mining,Liaoning Technical University,Fuxin　 123000,China; 2. School of Mechanics and Engineering,Liaoning Technical University,Fuxin　123000,China; 3. College of Safety Science and Engineering,Liaoning Technical University,Fuxin　 123000,China; 4. Resarch Center of Coal Resources Safe Mining and Clean Utilization,Liaoning Technical University,Fuxin　 123000,China

为了计算不同冲击危险程度煤岩体的具体影响尺度,实现煤矿冲击地压的针对性预防和治理,提出了"煤岩动力系统"的概念,构建了"煤岩动力系统与冲击地压显现关系"模型。基于爆破理论和Mises屈服强度准则,提出了"煤岩动力系统"各区域尺度计算方法并建立了相应的评价指标体系。根据煤矿已发生冲击地压和"高能量"微震事件的震源位置和能量值,确定煤岩动力系统"动力核区"、"破坏区"、"损伤区"和"影响区"等各区域尺度的具体影响范围,判断不同尺度范围内煤岩体的冲击危险程度。将煤岩动力系统各区域尺度计算方法在老虎台煤矿进行了准确性验证,表明该方法具有较高的可信度和实用性,可以广泛应用在矿井冲击地压的预测与危险性评价工作中。

In order to calculate the concrete scale range of coal and rock mass in different rockburst danger degrees, and prevent and control rockburst in coal mine,the concept of dynamic system of coal and rock is put forward in this paper. The model of the relationship between the occurrence of rockburst and dynamic system is built at the same time. The calculation method of dynamic system scale and its evaluation system and quantitative indicators are put for-ward based on blasting theory and Mises yield strength criterion. According to the source position and energy value of happened rockburst and microseismic events,the concrete scale range of dynamic nuclear area zone,damage zone,in-jury zone and influence zone are calculated,so that the different rockburst danger degrees in different areas of coal and rock mass could be determined. The accuracy of dynamic system scale calculation method is validated in Laohutai coal mine,and the results show that the calculation method is highly reliable and practical,which could be widely used in forecasting the risk of rockburst.

国家自然科学基金资助项目(51274117；51674135)；

Rong Hai,Zhang Hongwei,Liang Bing,et al. Instability mechanism of dynamic system of coal and rock[J]. Journal of China Coal Society, 2017,42(7):1663-1671.