采空区失稳导致的地表塌陷处置措施研究

Study on the Disposal Measures of Surface Subsidence Caused by Goaf Unstability

针对采空区失稳导致的地表塌陷问题,采用Hoek-Brown强度准则确定某矿宏观岩体力学参数,通过FLAC3D数值模拟研究,圈定出地表移动范围并进行安全监测,提出采用选矿厂全尾砂胶结充填塌陷区域及采空区的处置措施,有效解决地表陷落、采空区存在的安全隐患问题及尾砂排放带来的安全环保问题,实现矿山的绿色开采。

In view of the surface subsidence caused by goal unstability, the macroscopic mechanical parameters of the rock mass of a mine is determined. Through FLAC3D numerical simulation study, the sur- face deformation scope is delineated and corresponding safety monitoring work is done. Based on the above study results, the disposal measures of goal and surface subsidence area is proposed by using unclassified tailings cement filling method. The study results show that the surface subsidence problem, the safety haz- ard problems existed in goal by the applications of the above disposal measures, besides that, it is also help for solving the safety environmental problems caused by tailings emission, and the goal of green min- ing can be realized.