摘要
以煤巷代替岩巷 ,可降低掘进费用 ,明显提高煤矿经济效益。但煤巷容易受动压影响 ,难以维护。把围岩关键层理论和锚杆支护的“扩容—稳定”原理设计的锚网梁组合支护 。
Using pillar laneway instead of waste laneway can reduce footage cost and increase economic benefit apparently.However,pillar laneway is easily affected by dynamic pressure and is hard to support.Based on surrounding rock key stratum theory and “expansion stability” theory,the article designed the support combination of anchor bolt,metal net and stull.This support made good economic benefit in Honghui No.4 Coal Mine,Jingyuan Mining Bureau.
关键词
锚网梁组合支护
异形断面
动压
煤层巷道
support combination of anchor bolt,metal net and girder
irregular face
dynamic pressure
