摘要
针对新元煤矿受采动剧烈影响、软弱破碎围岩区段平巷的支护难题,从加固软弱破碎围岩,加强薄弱部位控制,降低采动剧烈影响时塑性区范围及其外移速率等入手,分析了其支护机理,提出了小孔径高预应力短锚索配合桁架锚索支护技术,并成功用于工业性实践,取得较好效果。
In order to solve the supporting difficult problem of soft-rock roadway influenced by strong mining in Xinyuan Colliery, the supporting technology of small-bore and high-pre-stress short anchored cable with truss cable was put forward by analyzing supporting mechanism from reinforcing soft and crack surrounding rock, strengthening weak part control and reducing the range and deformation velocity of plastic zone influenced by strong mining. Field test showed the technology had excellent effect.
出处
《煤矿开采》
北大核心
2015年第5期43-45,14,共4页
Coal Mining Technology
基金
国家自然科学基金资助项目(51234005)
中央高校基本科研业务费专项资金资助(2010YZ02)
关键词
剧烈采动
软弱围岩
预应力锚索
桁架锚索
strong mining
soft rock
pre-stress anchored cable
truss cable
