摘要
研究了急倾斜煤层开采上覆围岩变形规律及破坏特征,分析区段煤柱的失稳形式,通过FLAC3D数值模拟的方法,对区段煤柱在不同宽度情况下,煤柱的压应力和剪切应力的变化情况进行对比,分析区段煤柱留设对围岩稳定性的影响,得出合理的煤柱留设宽度。
Study on the coal seam overlying rock deformation and failure characteristics of steep,analysis of coal pillar instability forms, with the method of FLAC~(3D) numerical simulation of coal pillars in different coal pillar width case, changes in the stress and shear stress were compared, analysis of section coal pillars influence on the stability of the surrounding rock, the reasonable width of the pillar leaving.
引文
[1]屠洪盛,屠世浩,白庆升,等.急倾斜煤层工作面区段煤柱失稳机理及合理尺寸[J].中国矿业大学学报,2013,42(1):6-11,30.
[2]张晋通,大倾角煤层区段煤柱合理尺寸研究[D].太原:太原理工大学,2016.
[3]杨国庆,田新明.运用地球物理勘探技术实现煤炭的科学开采[J].煤炭技术,2014,33(5):135-138.
[4]马亚杰,武强,洪益清,等.急倾斜煤层开采覆岩变形分析及其应用[J].煤炭学报,2009,34(3):320-324.
[5]吴睿,马天勇等,刘长友,等.急倾斜煤层综采工作面顶板活动规律的数值模拟研究[J].煤炭工程,2013,45(9):79-82.