数值法分析上向多阶段充填开采的地表变形演化规律

Numerical Method Analysis on Surface Deformation Law of Multi-stage Cut and Fill Mining

以张庄铁矿充填法开采矿山为研究对象,运用FALC3D软件对采矿过程进行分析模拟,以数值计算结果的应力变化、位移变化以及地表沉降情况,总结多阶段充填法开采的演化规律,得出随着采矿施工的进行,充填体一定程度上限制了采场的进一步变形和破坏,位移随着采矿的逐步进行而逐渐加大,上盘区域位移量明显大于下盘区域位移量的演化规律。

; Taking Zhangzhuang Iron Ore with cut and fill mining method as study object, use FALC3D software to analyzeand simulate the mining procedure. According to the variation of stresses and displacement and the situation of ground surfacesettlement of numerical calculation results, summarize the evolution law of multi-stage cut and fill mining, i. e. with thedevelopment of mining construction, the filling body limits the further deformation and destroy of the stope in a certaindegree. The displacement will be enlarged gradually with the development of mining. The evolution law of hanging side’ sdisplacement amount is obviously larger than the footwall displacement amount