摘要
内蒙古某露天矿近年地质条件发生变化,南帮逐渐变形滑移,存在严重的安全隐患,并且帮坡角变缓造成压煤程度加深,因此提出露井联合开采西推和西北推两种方案。经过各特征研究对比分析得出采用露天西北推方案较优。通过FLAC 3D数值模拟不同宽度保护煤柱下的边坡岩体的应力变化规律和位移变化规律,确定保护煤柱宽度,确定停产线位置,为今后的露井联合开采提供理论基础。
With the geological change of some mine in Inner Mongolia, south side with deformation and slide, causing potential safety hazard, the slowing side angle deepened the buried coal, the west mining and northwest mining were put forward. By comparison, the strip northwest mining was better. Rock stress and displacement changing law under different width protective coal column were got by FLAC 3D numerical simulation, which ensured the width of protective coal column and the position of stopping mining line, provided theoretical basis for strip mine combined mining.
出处
《煤炭与化工》
CAS
2016年第5期18-21,24,共5页
Coal and Chemical Industry
