深部开采对地层变形及路基沉降影响研究

Study on the effect of deep mining on ground deformation and subgrade settlement

文章结合淮南矿务局张集矿井铁路专用线,进行研究区段的地层变形和路基沉降分析计算;分析了采煤高度、开采次数、开采位置对路基沉降的影响,得到路基的采动下沉情况,当路堤位于采空区中央时各项移动变形值较小,以此指导煤矿开采。

This paper considers the soft foundation treatment for the special railway owned by Zhangji Coal Mine under the jurisdiction of Huainan Mining Bureau. The ground deformation and subgrade settlement are analyzed, and the influences of the distribution of the soft soil, the emergency altitude of the road, times of mining and positions of mining are discussed. Thus the information of subgrade settlement due to underground mining is obtained and then the reinforcement zone is defined. It is concluded that the settlement and deformation are uniform when the subgrade of the railway is in the central area of the goaf,which can be used to guide the work of coal mining.