极近距离煤层刀柱采空区下开采相似模拟研究

Similar Simulation Research on Exploitation under Goaf and Coal Pillar in Ultra-close Coal Seam

王封煤矿9101工作面属于典型的极近距离煤层刀柱采空区下开采。针对工作面在进出煤柱期间多次出现支架阻力异常、移架困难、煤壁大范围片帮及顶板漏冒等矿压显现问题,以9101工作面为原型,运用相似模拟实验给出了该工作面在进出煤柱阶段的矿压显现规律,并理论分析了矿压显现的根本原因。

The 9101 working face of Wangfeng coal mine belongs to the typical coal mining under the cutting edge of the coal seam in the ultra-close coal seam. In view of the working face in the coal pillar appears the abnormal pressure of the support, the difficulty of the transfer, the large scale of the coal wall and the roof leakage,using similar simulation experiment shows the pressure behavior of the working face under the coal pillar by taking the 9101 working face as the prototype. The root cause of the strata pressure is explained by theoretical analysis.