复杂难采大倾角煤层开采相似模拟实验研究

Complex difficult angle in seam mining analog simulation experiment research

本文以木城涧煤矿复杂难采大倾角煤层为研究对象,采用相似材料模拟方法,对该煤层开采过程中采场沿煤层走向、倾向上覆岩层破坏、运移规律、位移变化规律进行研究。实验结果表明:上覆岩层垂直位移随层位下降而逐渐增大,并沿开采反方向离开工作面一定距离开始发生显著增加,给回采工作带来了一定的困难。

In this paper, take thick coal seam of coal mine for the study. By using similar materials Simula- tions to study the destruction and moment law of overlying strata along coal seam strike and inclination. The results show that： the vertical displacement of the overlying rock gradually increased with the layer descend, and the opposite direction along the mining face a certain distance away began to increase significantly. All these have brought a certain amount of recovery work difficult.