深部条带开采下沉系数与采厚关系的数值模拟

以峰峰万年矿的地质采矿条件为原型,利用FLAC3D数值模拟软件,建立了深部大采宽条带开采数值模拟模型,对开采厚度与下沉系数的关系进行了研究.结果表明：在采深和采出率等条件相同的情况下,地表下沉值和水平移动值均随采厚的增加而增大,而下沉系数随采厚的增加以非线性关系逐渐减少.下沉系数与开采厚度关系的确立,对深部大采宽条带开采地表移动变形预计及优化设计具有指导作用.

Numerical simulation study on the relationship between mining height and subsidence factor in deep strip pillar mining

Based on the geology and mining conditions of Fengfeng Wannian coal mine, the numerical stimulation models of deep strip pillar mining were set up by FLAC3D. The relationship between mining height and subsidence factor in deep strip pillar mining was studied. And the results show that with the increase of mining height, the surface subsidence and horizontal movement value increase, while the subsidence factor decreases in nonlinear. The relationship formular between mining height and subsidence factor in deep strip pillar mining was established.