北岭煤矿大断面软岩巷道锚固承载结构和支护研究  

Research on Anchorage Bearing Structure and Support of the Large Cross Section Soft Rock Roadway in Beiling Coal Mine

作　　者：张文 Zhang Wen(Shanxi China Coal Pingshuo Beiling Coal Industry Co.,Ltd.,Shanxi Shuozhou 038500)

机构地区：[1]山西中煤平朔北岭煤业有限公司,山西朔州038500

出　　处：《山东煤炭科技》2023年第8期25-27,共3页Shandong Coal Science and Technology

摘　　要：针对大断面软岩巷道易发生冒顶和片帮等问题,以北岭煤矿运输顺槽为对象,研究发现支护体可以限制巷道浅部围岩的破坏次数和破坏形式,提高围岩残余强度,形成锚固承载结构。对不同支护下巷道塑性破坏和垂直应力分布进行研究,结果表明:顶锚杆间排距为1.0 m和1.2 m、帮锚杆间排距为1.5 m和1.2 m、锚索间排距为2.4 m和3.6 m,巷道变形可控,应用效果良好。In view of the problems of roof fall and slope fragmentation in the large cross section soft rock roadway,taking the transportation channel of Beiling Coal Mine as the object,the research found that support bodies can limit the number and form of damage to the shallow surrounding rock of the roadway,improve the residual strength of the surrounding rock,and form an anchorage bearing structure.A study is conducted on the plastic failure and vertical stress distribution of roadways under different supports.The results show that the row spacing between top anchor rods is 1.0 m and 1.2 m,the row spacing between side anchor rods is 1.5 m and 1.2 m,and the row spacing between anchor cables is 2.4 m and 3.6 m.The deformation of the roadway is controllable and the application effect is good.

关 键 词：软岩 巷道 大断面 支护 

分 类 号：TD353[矿业工程—矿井建设]