基于层次分析的深部矿井断层合理保护煤柱宽度

Reasonable Width of Fault Protection Coal Pillar in Deep Coal Mine Based on Analytic Hierarchy Process

为解决深部矿井断层保护煤柱合理留设的问题,针对传统经验公式的不足和缺陷,利用层次分析法筛选出影响其稳定性的主要因素。采用FLAC3D软件,通过对不同条件下的保护煤柱数值模拟,得出断层活化临界状态下的保护煤柱宽度,其结果证明经验公式对深部矿井适应性不强。MATLAB回归分析表明:保护煤柱宽度与各因素的计算公式拟合效果良好,相关性较高。

To solve the problem of the fault protection coal pillar in deep mining and aiming at the shortcomings of the traditional empirical formulas, the main factors affecting the fault protection coal pillar＇s stability are screened by the analytic hierarchy process. By numerical simulating of the protection coal pillar under different conditions, its width under the critical state of the fault activation is obtained. The result proves that the traditional empirical formulas are weak adaptability. MATLAB regression analysis shows that the protective coal pillar＇s width has good fitting effect and better correlation with the formula of different factors.