大采高回采巷道帮部片帮及支护技术研究  

Research on the support technology of large mining height mining roadway wall parts and support

作　　者：李世辉[1] 潘辉[1] 刘明亮[1] 范雪峰 LI Shihui;PAN Hui;LIU Mingliang;FAN Xuefeng(Huainan Mining Industry Group,Huainan 232001,China)

机构地区：[1]淮南矿业(集团)有限责任公司,安徽淮南232001

出　　处：《四川建材》2024年第12期95-97,109,共4页Sichuan Building Materials

摘　　要：针对大采高工作面回采巷道帮部片帮严重的问题,采用理论分析的方法得到回采巷道片帮的主要影响因素,运用数值模拟的方法研究煤体强度、巷道高度对片帮的影响。模拟计算得出,随着巷道高度增大及煤壁自身强度降低,巷道帮部水平位移量增大,且巷道帮部浅部监测点变化量大于深部监测点变形量,巷道煤壁浅部变形受影响大于深部煤体,并到了1211(3)工作面回采巷道合理巷高为3.5 m,提出全断面全长锚固一次支护技术和超前应力集中区二次补强支护技术,有效减小回采巷道帮部片帮风险。In view of the serious problem of the side caving of the mining roadway in the large mining height working face,the main influencing factors of the side caving of the mining roadway are obtained by theoretical analysis,and the influence of the coal body strength and the roadway height on the side caving is studied by numerical simulation.The simulation calculation shows that with the increase of the roadway height and the reduction of the strength of the coal wall itself,the horizontal displacement of the roadway side increases,and the change of the shallow monitoring points of the roadway side is greater than the deformation of the deep monitoring points,and the shallow deformation of the roadway coal wall is more affected than the deep coal body,and the reasonable roadway height of the mining roadway in the 1211(3)working face is 3.5 m,and the full-section full-length anchoring primary support technology and the advanced stress concentration area secondary reinforcement support technology are proposed,it effectively reduces the risk of wall fragmentation at the side of the mining roadway.

关 键 词：大采高 回采巷道 片帮机制 全长锚固 围岩控制 

分 类 号：TD353[矿业工程—矿井建设]