摘要
针对放回采巷道为全煤巷道,受采动影响巷道围岩变形大,破坏严重的问题,为了解决该类巷道支护问题,通过应用工程类比法、理论计算法,对山河煤矿首采工作面回采巷道变形破坏特点设计出合理的支护方案,确定了锚杆、锚索的长度及间距排距和预紧力四个关键支护参数。巷道矿压观测数据表明该方案有效的控制了巷道变形与破坏,取得良好的经济效益。
Fully mechanized caving face gateway is coal roadway,and its deformation and destruction are serious under mining influence.In order to solve the support problem of such gateway,engineering analogy and theoretical calculation method were used in the paper based on the deformation failure character of gateway of first work face in Shanhe coal mine,then reasonable design was obtained,moreover,pre-stressed bolt＇s length,spacing between bolts,distance between rows and pretension force were put forward.Finally,the strata control observation dat shows that gateway deformation was under control by this plan,and the better economic benefit was obtained.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2011年第1期9-12,共4页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金资助项目(50804020
51004061)
关键词
锚网索支护设计
矿压观测
综放面
回采巷道
bolt-mesh-anchor support design
strata control observation
fully mechanized caving face
gateway
