摘要
为解决长城三矿1903S回风巷留巷顶板抽冒问题,通过分析大倾角煤层沿空留巷巷道顶板受力状态与影响充填体上直接顶板极限平衡区发育宽度因素,拟提出该留巷巷道顶板全锚索支护方案;应用表明,顶板全锚索技术的应用可有效控制顶板岩层稳定,限制顶板离层变形,避免了抽冒现象的发生,保证了巷道能够正常使用,降低了巷道返修工作量和成本,保证了矿井生产安全。
To solve the roof collapse in retaining roadway at 1903S ventilation roadway of Changcheng No.3 Colliery,the authors propose the whole anchor support for retaining roadway roof by analysis of the roof stress in retaining roadway along goaf with deeply-inclined coal seam and the influential factors of development width in limit equilibrium zone of immediate roof above filling body,which can effectively control the stability of roof strata,restrict the roof bed separation deformation,reduce the maintenance workload and cost and guarantee the normal operation and safety production.
作者
张信承
刘元超
马富强
高峰
Zhang Xincheng;Liu Yuanchao;Ma Fuqiang;Gao Feng(Xinwen Mining Group Inner Mongolia Energy Co.,Ltd.,Otog Front Banner,Inner Mongolia 016200)
出处
《江西煤炭科技》
2023年第2期33-35,39,共4页
Jiangxi Coal Science & Technology
关键词
大倾角煤层
沿空留巷
锚索支护
模型分析计算
deeply-inclined coal seam
retaining roadway along goaf
anchor support
model analysis and calculation
