摘要
针对某矿辅助运输大巷埋深大应力变化复杂的特点,对软岩巷道底鼓成因进行分析,并对巷道原支护设计方案进行优化,提出了底板安装锚索束＋注浆加固围岩支护方案。应用结果表明：采用新的支护方案后,巷道断面顶底板最大移近量为87 mm,顶底板变形在30~40 d后基本稳定。
Based on complex stress and large depth of auxiliary transportation roadway of some mine, the reason of soft roadway floor heave was analyzed, the original support of roadway was optimized, the floor with anchor bolt ＋grouting reinforcement surrounding rock was put forward. The result showed that the maximum convergence of roadway section roof and floor was 87 mm, the floor deformation became stable after 30~40 d of roof and floor deformation.
出处
《煤炭与化工》
CAS
2016年第6期1-4,共4页
Coal and Chemical Industry
关键词
软岩巷道
底鼓
支护设计
围岩支护
soft roadway
floor heave
support design
surrounding rock support
