预应力桁架锚索支护技术在动压巷道中的应用  

Application of prestressed truss cable supporting technology in dynamic pressure roadway

作　　者：王建伟[1] Wang Jianwei(Baiping Coal Company of Zhengzhou Coal Group,Zhengzhou 452470,China)

机构地区：[1]郑煤集团(河南)白坪煤业公司

出　　处：《能源与环保》2019年第9期194-197,共4页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

摘　　要：为了提高受采动影响的工作面支护强度,控制巷道围岩变形,对巷道变形原因进行分析,针对巷道地质条件复杂,不利于形成整体结构情况,采用高预应力桁架锚索支护为巷道水平和垂直方向同时提供预应力支护,使煤岩体处于多维挤压状态,弥补单体锚索支护没有水平张紧力的缺点。经数值模拟与监测分析,支护加固后,巷道变形量稳定在160mm左右,巷道围岩变形得到控制。In order to improve the support strength of the working face affected by mining,control the deformation of the roadway surrounding rock,and analyze the reasons for the deformation of the roadway,the geological conditions of the roadway are complex,which is not conducive to the formation of an overall structure,high prestressed truss anchor cable support is used to provide both horizontal and vertical stress support for roadway,so that the coal rock mass is in multidimensional extrusion state,making up for the shortcomings of the single anchor cable support without horizontal tensioning force.After numerical simulation and monitoring analysis,the deformation of the roadway is stable at about 160 mm,and the deformation of the roadway surrounding rock is controlled.

关 键 词：桁架锚索 巷道 动压 数值模拟 预应力 

分 类 号：TD353[矿业工程—矿井建设]