综采工作面过不同层位空巷围岩移动变形规律研究

Research on the Movement and Deformation Law of the Surrounding Rock of the Comprehensive Mining Working Face over Different Layers of Empty Tunnel

摘要: 针对工作面过不同层位空巷造成围岩变形及应力扰动等问题，以宁夏某矿的综采工作面为工程背景，采用模拟分析方法来确定工作面过不同层位巷道围岩变形规律，并根据工作面空巷实际分布情况，采用Flac3D建立数值模型，分析工作面推进过程中空巷的围岩变形、应力分布及塑性破坏特征，对不同层位条件下工作面过空巷提出相应措施，为综采工作面安全高效过空巷提供重要参考。

Abstract: In order to solve the problems of surrounding rock deformation and stress disturbance caused by the working face passing through different layers of empty alleys, we take the comprehensive mining face of a mine in Ningxia as the engineering background, use the simulation analysis method to determine the deformation law of the surrounding rock of the roadway of the working face passing through different layers, and according to the actual distribution of the empty alleys of the working face, we use Flac3D to establish the numerical model to analyze the deformation of the surrounding rock of the empty alleys, the distribution of the stresses and the characteristics of the plastic damage in the process of the advancing of the working face. The characteristics of deformation, stress distribution and plastic damage are analyzed, and corresponding measures are proposed for the working face to pass through the empty tunnel under different layer conditions, which will provide an important reference for the safe and efficient passing through the empty tunnel in the comprehensive mining face.