摘要
针对汾源煤业5-1021巷道所处的“三软”煤层的特殊地质条件,分析了巷道在“三软”环境下变形破坏的机理,确定了改善围岩整体强度和支护方式的整体思路,采用锚网索+注浆加固的方式控制巷道围岩。应用效果表明,5-1021巷道两帮移近量稳定在47 mm、顶底板移近量稳定在28 mm,变形收敛速率逐渐降低,巷道控制效果能够满足矿井生产需求。
By analysis of the mechanism of roadway deformation and failure of the roadway in the"three-soft"environment at 5-1021 roadway in Fenyuan Coal Industry Co.,Ltd.,the paper introduces the bolt-mesh-anchor support with grouting reinforcement to control the surrounding rock,in which the convergence rate of deformation is gradually reduced with the stable displacement of both sides of 47 mm,roof and floor of 28 mm with good control effects.
作者
李文军
Li Wenjun(Fenyuan Coal Industry Co.,Ltd.,Huozhou Coal&Electricity Group.,Jingle,Shanxi 035100)
出处
《江西煤炭科技》
2020年第3期90-92,96,共4页
Jiangxi Coal Science & Technology
关键词
“三软”煤层
围岩控制
锚网索
注浆
巷道支护设计
"three-soft"coal seam
surrounding rock control
bolt-mesh-anchor
grouting
roadway support design
