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.
作者
李慎锋
刘兴邦
郭运刚
王忠刚
LI Shen-feng;LIU Xing-bang;GUO Yun-gang;WANG Zhong-gang(Qingdao Ruiyuan Engineering Group Co.,Ltd.,Qingdao 266000,China;Inner Mongolia Universing of Scienceand Technology,Baotou 014010,China)
出处
《煤炭技术》
CAS
2019年第1期27-29,共3页
Coal Technology
关键词
急倾斜煤层
区段煤柱
围岩稳定性
steep seam
coal pillar
stability of surrounding rock
