节理煤巷桁架锚杆复合支护技术的应用  

Application on Composite Bolt Support Technology of Jointed Coal Roadway

作　　者：张友明 

机构地区：[1]永煤集团征迁复垦公司,河南永城476600

出　　处：《煤炭技术》2017年第12期13-15,共3页Coal Technology

摘　　要：针对车集煤矿2308工作面两帮变形量大、支护失效等情况,2308工作面下顺槽围岩条件、支护现状等进行分析,通过观测围岩变形规律和支护失效的表现形式,确定支护失效的原因,提出控制巷道变形的技术措施,制定新的桁架锚杆支护方案,并确定相关参数和具体要求,最后进行现场试验并观测巷道变形量。观测表明,新的支护方案对巷道围岩的破坏和变形量的控制有较好的效果,能满足现场的支护要求。According to the bottom gateway＇s big deformation and support failure conditions of 2308 workface of Juji coal mine,the condition of surrounding rock and supporting situation of 2308 workface bottom gateway were analyzed. By observing support,determined the cause of failure of deformation of tunnel and proposed new of deformation law of surrounding rock and failure form of support and new technical measures for controlling the composite bolt supporting scheme. Then field test and observation. Observation shows that the new control scheme has good control effect on the damage and deformation of surrounding rock and could meet the requirements of the scene.

关 键 词：节理岩体 预应力锚杆 复合支护 

分 类 号：TD35[矿业工程—矿井建设]