矿山副井沉降变形监测技术的应用研究

Application Research on Monitoring Technology for Settlement and Deformation of Mine Auxiliary Wells

某煤矿开采5 a后,受煤层厚度、煤层埋深、开采方法和覆岩特性等多种原因影响,副井出现地表及岩层移动。基于此,设计地表变形及沉降观测方案,对副井地面沉降和变形进行监测分析。结果表明:井壁主应力最大值为7.97 MPa,井壁状态安全,地面沉降的速率和数值与距井口距离呈正相关性。

After 5 years of mining in a certain coal mine,various factors such as coal seam thickness,coal seam depth,mining methods,and overlying rock characteristics have affected the movement of the surface and rock layers of the auxiliary shaft.Based on this,this paper designs a surface deformation and settlement observation plan to monitor and analyze the ground settlement and deformation of the auxiliary shaft.The results show that the maximum principal stress on the wellbore is 7.97 MPa,and the wellbore is in a safe state.The rate and value of ground settlement are positively correlated with the distance from the wellhead.