孤岛工作面内错尾巷强化支护与现场应用分析  

Analysis of Reinforced Support and Field Application of Wrong End Lane Within Isolatec Working Face

作　　者：李会旗 Li Huiqi(Gaoping Emergency Management Bureau,Gaoping Shanxi 048400)

机构地区：[1]高平市应急管理局,山西高平048400

出　　处：《机械管理开发》2023年第4期223-224,227,共3页Mechanical Management and Development

摘　　要：针对煤矿孤岛工作面内错尾巷锚杆+锚索联合支护方案下工作面围岩变形量大、变形速度较快的问题,在对支护现状和原因分析的基础上,提出采用混凝土支柱对内错尾巷进行强化支护,确定混凝土支柱半径为0.3 m,高度为2.2 m。通过数值模拟和工程应用两种手段验证了强化支护的效果,表明工作面进行强化支护后,顶底板移近量和两帮移近量分别较原支护方案减少65%和60%,巷道断面收缩率减少26%。In view of the problem of large deformation and fast deformation of the surrounding rock of the working face under the combined anchor rod+anchor cable support scheme of the inner wrong end lane of the isolated working face of coal mine,based on the analysis of the current situation and causes of the support,the reinforced support of the inner wrong end lane by concrete pillars was proposed,and the radius of concrete pllars was determined to be 0.3 m and the height to be 2.2 m.Finally,the effect of the reinforced support was verified by both numerical simulation and engineering application.Finally,the effect of reinforced support was verified by both numerical simulation and engineering application,and it was concluded that after reinforced support was applied to the working face,the top and bottom slab displacement and the two gang displacement were reduced by 65%and 60%,respectively,compared with the original support scheme,and the contraction rate of the roadway section was reduced by 26%.

关 键 词：孤岛工作面 内错尾巷 混凝土支柱 移近量 收缩率 

分 类 号：TD822.1[矿业工程—煤矿开采]