Tang’ an Coal Mine Branch, Shanxi Lanhua Sci-tech Venture Co., Ltd.

为研究断层-褶曲双重构造影响下巷道应力分布规律及抗冲机制,以唐安煤矿为工程背景,通过FLAC3D建立数值模型,分析了构造类型、断层倾角以及煤体强度对构造影响区应力的影响。特征模拟结果表明,断层-褶曲构造、F3断层倾角为65°、煤体弹性模量为2.6GPa是引起应力集中发生冲击事件的重要因素。同时分析微震事件监测数据,划分高低能级事件,确定了巷道采掘及服役期间冲击发生原因,并给出了合理的抗冲措施。

fold dual structure, a numerical model was established through FLAC to analyze the influential characteristics of structuraltype, fault dip angle and coal strength on the stress in the tectonic influential zone, and the simulation results showed that thefault-fold structure, F3 fault dip angle of 65° and coal elastic modulus of 2. 6GPa were important factors causing stress con-centration-induced rock burst events. At the same time, the monitoring data of microseismic events were analyzed, the highand low energy level events were divided, the causes of the rock burst during roadway mining and service were determined,and reasonable anti-rock burst measures were given.