深部巷道围岩动静载荷变化特征的数值模拟研究

摘要

为了分析上部砾岩垮落对深部巷道产生的动力冲击影响，以某矿1410工作面为研究对象，采用FLAC3D 动力模拟部分，在模型的上部边界施加动力载荷，以模拟上部砾岩断裂对1410上平巷围岩稳定性的影响。通过数值模拟与理论分析得出掘进巷道在不同时刻的最大主应力与弹性应变能分布特征规律，与现场监测基本一致。及时掌握应力及弹性应变能积聚规律，能为矿山的安全开采提供理论基础。%In order to analyzing impact influence of conglomerate caving on deep roadway, dynamic load was applied on upper bound-ary of model to simulating the influence of conglomerate breakage on surrounding rock stability of 1410 upper roadway with FLAC3D . Numerical simulation and theoretical analysis obtained maximum principal stress and elastic strain energy distribution rule at different moments which was basically accordance with field monitoring.Timely obtaining stress and elastic strain energy accumulation rule could provide theoretical reference for safe mining.