摘要
针对某煤矿上覆煤层顶板破碎巷道围岩支护困难的技术问题,结合地质条件以及巷道所处位置的实际情况设计了两种不同支护方案,方案一是采用锚带网+锚索支护,方案二是采用锚带网+注浆锚索+桁架组合支护。通过理论分析和数值模拟比较,确定采用方案二支护方案,并以该矿13号煤层胶带运输大巷作为试验巷道。试验表明此巷道围岩得到了有效的控制,确保了矿井的安全高效生产。
Aiming at the technical supporting difficulties of surrounding rock in the roadway with broken roof of overlying coal seam,based the geological conditions in the location of the roadway,two supporting plans were proposed:anchor-belt-net and anchor-cable support,and anchor-belt-net,grouting anchor cable,and truss combined support.On the theoretical analysis and numerical simulation comparison,the second plan is adopted and the main transport roadway with belt conveyor of No.13 coal seam is used as the testing roadway.The test shows that the surrounding rock is effectively controlled,ensuring the safe and efficient production of the mine.
作者
刘伟杰
LIU Weijie(Xinzhou Co.,Ltd.,Jinneng Group,Xinzhou 034000,China)
出处
《山西煤炭》
2019年第1期42-45,共4页
Shanxi Coal
关键词
极近距离
采空区
数值模拟
支护方案
extremely close coal seam
goaf
numerical simulation
supporting plan
