群空区稳定性聚类分级及处治对策

Stability classification and countermeasure of goafs group

为对群空区进行稳定性分级及综合处理研究,在前期空区探测的基础上,基于三维数值模拟程序MIDAS/GTS与FLAC 3D耦合对采空区的稳定性进行模拟分析,综合考虑顶板最大位移、最大主应力、最小主应力等3个因素对群空区进行聚类分级,并在此基础上提出群空区的综合处治对策。结果表明:运用模糊聚类分析方法,实现最大顶板位移、最大主应力和最小主应力的多因素五级分类,分级结果与空区实际的稳定性一致。提出了不同稳定性类别的空区处置对策,为矿山空区的安全处置提供一种技术思路。

In order to classify the stability and countermeasure of goafs group,based on the previous goafs group detection,3D numerical simulation software MIDAS/GTS and FLAC 3D are used to simulate and analysis goafs group stability.The goafs group stability is classified according to three elements such as roof subsidence displacement,minimum principal stress and maximum principal stress.And countermeasure is presented based on previous classification.The result shows that using fuzzy cluster analysis to classify the goaf is consistent with the actual stability property of goafs group.Different types of treatment measures for goafs are proposed to provide technical ideas to counter goafs.