临近断层的工作面开采诱发断层活化机理研究

基于临近断层构造区工作面开采易诱发冲击地压事故的工程背景，提出了建立断层构造区工作面开采的力学模型并对其计算分析，结果表明：工作面采动对断层弱面造成扰动影响，按距离可分为远场和近场扰动效应|远场采动诱发断层活化时，断层弱面上粘合接触点统计上的破坏形式决定了断层弱面是稳滑状态还是粘滑状态|近场采动诱发断层构造活化时，采掘工作面位于断层下盘岩层时，断层岩块发生向上、向下剪滑失稳及断层岩块张拉离层失稳危险性高于上盘开采方式。

Study on the mechanism of fault activation induced by near fault structural mining

Based on the engineering background of mining prone ground pressure accidents which are easily induced by the mining face of adjacent faults, the mechanical model and calculation analysis are established in this paper. The results show that the working face mining can affect the weak surface of the fault, and can be divided into the far field and the near field disturbance effect according to the distance, and the fault structure is activated by the far field mining. The failure form of the adhesive contact points on the weak surface determines whether the weak surface of the fault is sliding state or stick slip state. When the fault structure is activated by the near field mining, the mining face is located in the footwall layer of the fault, and the fault rock mass is shear slide upward and downward, and the risk of the fault rock block tensioning separation is higher than that of the upper plate mining method.