综放工作面小煤柱沿空掘巷支护技术应用分析

Application Analysis of Support Technology in Gob-side Entry Driving with Small Pillars in Fully Mechanized Caving Face

煤峪口矿8202综放工作面回风巷与相邻的8203工作面之间原设计留设38m煤柱,煤炭资源损失大且巷道支护困难;拟改进采用以锚杆锚索为主支护、组合锚索为辅助支护方案;通过实时监测巷道围岩变形,其巷道两帮的围岩变形量大于巷道顶底板的变形量,离工作面越远巷道的稳定性越好;沿空掘巷支护后,巷道围岩的变形得到有效控制,支护效果较好。

Due to a large loss of coal resources and difficulty in roadway support in 8203 fully mechanized caving working face,Meiyukou Colliery,the author proposes a plan with anchor rod and cable as the main support and combined anchor cable as auxiliary support,which effectively controls the deformation of the surrounding rock of the roadway,and the support effect is good.The deformation of the surrounding rock of the two sides of the roadway is greater than that of the roof and floor of the roadway,and the farther from the working face,the better the stability of the roadway.