基于正交试验的锦界煤矿开采沉陷影响因素分析

Analysis of Mining Subsidence Movement Factors in Jinjie Coal Mine Based on Orthogonal Experiment Design

以神东矿区锦界煤矿为背景,在正交试验基础上借助3DEC数值模拟软件对开采沉陷主控因素(松散层厚度、采厚和覆岩综合硬度)进行了敏感性分析。研究结果表明,不同因素具有较大的差异性,下沉系数和水平移动系数的敏感性由大到小依次为松散层厚度、采厚、覆岩综合硬度。最后,利用线性回归分析法建立了多因素作用下地表开采沉陷预测模型,回归效果非常显著。

Based on the condition of the main mining coal in Jinjie coal mine of Shendong mining area,the main control factors( thick and loose overburden strata,the mining thickness and numerical simulation),were selected to analyze their sensitivity using the orthogonal experiment design and the numerical simulation program 3DEC. The results show that the sensitivity of factors is of great difference,and the thick and loose overburden strata has the greatest sensitivity to subsidence factor and displacement factor,and the mining thickness have the greater sensitivity to numerical simulation. A mathematical formula of subsidence factor and displacement factor,which considers several factors,is obtained by regression analysis and the result is excellent.