基于FLAC^(3D)的隐患空区识别研究

Identification of mined-out area with hidden danger based on FLAC^(3D)

以河北某银(金)矿采空区为研究背景,通过建立FLAC^(3D)数值模型,研究分析了采空区周围的应力、位移、塑性区分布情况。研究结果表明,27个空区中的4个属于隐患空区中的关键空区,需要在下步残矿回采方案制定过程中重点研究和优先治理;14个空区局部可能出现破坏,需要结合残矿回采方案确定合理治理顺序和方案。研究过程及结论可供空区治理方案研究及类似矿山参考。

In this paper,the distribution of stress,displacement and plastic zone around mined-out areas in a silver（gold）mine in Hebei is studied based on the FLAC^3D numerical model.The results show that 4 of 27 minedout areas may be the key areas with hidden danger,which need to be focused on and preferentially treated in the process of making the next remaining ore mining scheme.Fourteen mined-out areas may partially be destroyed,which require a combination of remaining ore mining scheme to determine the reasonable governance order and scheme.The research process and conclusions can provide reference for the study of mined-out areas treatment scheme and similar mine.