基于有限单元技术的紫金山金铜矿区地应力场反演分析

FEM-Based Inversion Analysis of In-Situ Stress Field of Zijinshan Gold-Copper Mining Area

根据紫金山金铜矿区的地应力实测资料以及矿区的地质构造条件,运用有限元技术建立了地应力场的多元回归模型,通过实测点地应力值用逐步回归分析方法求出回归系数,较为准确地反演矿区地应力场,得到了紫金山金铜矿区地应力场的分布规律;这对研究矿山露天地下联合开采过程中的露天矿边坡稳定性、地下采矿方法和开采顺序等有重要的意义。

In light of the practically measured data of the in-situ stress in Zijinshan gold-copper mining area and its geological structural conditions, a multielement regression model was established by using finite element method. The regression coefficients were obtained by the stepwise regression of the practically measured ground stress values, which were used to accurately inverse the in-situ stress field of the mining area and to find its distribution regularity in this mining area. It is of important significance to the study of the open pit slope stability, underground mining method and mining sequence in open-pit and underground combined mining.