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半解析数值方法具有降低维数、节省内存、建模工作量小等特点 ,用于三维开采沉陷计算和应力分析具有明显的优越性 .基于半解析方法中的层单元和棱柱单元推导计算方法 ,在Vi sualFortran 6 5环境下编写了可用于全采、条采和房柱式开采的三维沉陷计算和应力分析程序 .以兖州矿业集团南屯煤矿房柱式开采的地质采矿条件为基础 ,应用三维半解析数值方法 ,分别对房柱式和条带式开采条件下的地表沉陷进行了三维对比模拟计算 ,获得了房柱式和条带式开采的控制地表沉陷的对比结果
The semi-analytical numerical method has the advantages of reducing the dimension, saving memory, and reducing the workload of modeling, and has obvious advantages for the subsidence calculation and stress analysis of 3D mining.Based on the derivation and calculation method of layer element and prism element in the semi-analytical method, The 3D subsidence calculation and stress analysis program that can be used for the whole production, strip mining and post-column mining have been written under the environment of Vi sual Fortran 6. Based on the geological mining conditions of chamber-column mining of Yanzhou Mining Group Nantun Coal Mine, Semi-analytical numerical methods were used to simulate the surface subsidence under the condition of chamber column and strip mining respectively, and the comparison results of surface subsidence controlled by column and strip mining