利用FLAC3D数值模拟软件构建煤层及其顶底板岩层三维赋存状态和应力状态,模拟不同采高下煤层在开挖过程采动影响下顶底板应力动态位移变化,选取合理的割煤高度,结合煤层条件确定最优的采放比,保证矿井高产高效的安全生产.%In this article we use FLAC3D numerical simulation software to construct three-dimensional mode of the states of occurrence and stress of the coal seam and its roof and floor strata, and to simulate dynamic displacement variation of roof and floor stresses in mining influence of excavation process in different mining high seam. Furthermore, reasonable coal-cutting height is selected, the optimal mining and caving ratio is determined in combination with coal seam conditions, all these ensure the safety production of the mine with high production and high efficiency.
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