采空区塌陷诱发山崩稳定性分析研究

Analysis and study on landslides stability induced by mined-out area collapse

随着地下矿山的持续开采，外加地下水的影响，采空区的岩体稳定性不断受到破坏；若采空区位于山体下或毗邻山体，一旦采空区塌陷，其大型结构弱面切割岩体将破坏岩体的连续性和稳定性，极易诱发山崩。以瑶岗仙钨矿为例，根据影响采空区稳定性的几种因素，采用FLAC^3D分析方法，构建三维数据模型，分析应力变化，计算山体剖面最大位移，从而分析山体的稳定性，制定针对性防护措施。

With the continuous mining of underground mines and the influence of groundwater, the rock mass stability of mined-out area is destroyed constantly. If the mined-out area is located in the mountains, or adjacent to the mountains, once the mined-out area collapse, its large weak structure surface cutting rock mass will destroy the continuity and stability of the rock mass, it is easy to induce landslides. In the case of Yaogangxian Tungsten Mine, according to the several factors which influence the stability of mined-out area, three-dimensional data model is established using FLAC^3D analysis method, and the stress changes, displacement, stability are analyzed, thus specific protective measures can be made.