摘要
针对陈四楼煤矿21209回风巷在掘进过程中揭露落差6 m断层的情况,且顶板松软破碎,托煤1.4 m的情况,普通的锚杆支护不能有效锚固到岩层中,因此,托煤段顶板将锚杆改为锚索支护,支护效果良好,顺利通过了该断层。
Based on 21209 air return roadway disposed fault with 6 m fall in Chensilou Mine, with soft and broken roof,support top coal 1.4 m, normal anchor bolt support cannot anchor in stratum effectively, therefore, support top coal roof support turned to anchor cable support into anchor bolt, with good support effect, crossing the fault successfully.
出处
《煤炭与化工》
CAS
2015年第4期46-48,55,共4页
Coal and Chemical Industry
关键词
断层
托顶煤
顶板管理
钻眼爆破
fault
support top coal
roof management
drilling hole explosion
