锚喷支护巷道剪切楔体滑移破坏理论分析方法  

Analysis of slide breaking of shearing wedge block of bolted and shotcreted roadways

作　　者：高谦[1] 任天贵[1] 王辉光[1] 

机构地区：[1]北京科技大学

出　　处：《化工矿山技术》1994年第3期12-5,11,共1页

摘　　要：处于非静水应力场中的圆形巷道的弹塑性围岩常在其垂直于最大主应力的方向上产生剪切楔体滑移破坏。对于这种破坏模式，可先将出现在圆形巷道两侧剪切滑移楔体的上下两个剪切面之间的喷层近似地简化为两端固定约束的无铰拱，利用结构力学方法求相应于该拱允许变形时作用在楔体上的压力，然后就拱顶直墙巷道的破坏进行类似的分析。针对锚喷网联合支护巷道的分析中存在变形不协调等问题，提出了经改进的分析方法。Slide breaking of shearing wedge block often occurs to elastic and plastic wall rockes around the circular roadways within the non-static head siress field in the direction perpendicular to its principal stress. Shotcreting layer between the upper and lower shearing fade of sliding wedge blocks on both sides of circular roadway can be approximatly simplified as a non-articulated arch fixed at its two euds and the pressure on wedge blocks respond to the arch permitable deformation can be boded according to structare mechaics.As a result,a slimilar is adoptcd for break analysis of arched roadway.A improved method is proposed for solving problems such as uncoordinated deformation,ete,encountered in analysis of roadways with combined support of shotcrete and bolting wire

关 键 词：锚喷支护 楔体 滑移破坏 巷道支护 

分 类 号：TD353.5[矿业工程—矿井建设]