裂隙岩体锚注-注浆-无锚三种加固方式的剪切实验及岩体变形规律研究  

Shear experiment on fissure rock with thress modes of anchor grouting , grouting and no anchor and analysis on rock deformation regulation

作　　者：康志强[1] 张雪岩[1] 贾玉波[1] 冯捷[1] 

机构地区：[1]河北联合大学矿业工程学院,河北省矿业开发与安全技术重点实验室,河北唐山063009

出　　处：《化工矿物与加工》2013年第6期25-28,42,共5页Industrial Minerals & Processing

基　　金：河北省自然科学基金项目(编号:E2012209004);河北联合大学培育基金项目(编号:LDPY007);河北省教育厅项目(编号:2011151)

摘　　要：通过剪切实验,分析了注浆、锚注节理试件其粘聚力和内摩擦角的变化规律。基于摩尔-库仑准则模型和简单库仑滑动模型准则,应用离散元UDEC分析了锚注支护控制节理裂隙边坡变形效应。结果表明:锚注加固能够提高节理裂隙岩体的抗剪强度,有效地抑制节理弱面的变形,增强和发挥岩体的自稳能力,为锚注工艺在节理弱面处的应用提供实验和理论依据。Through the shear experiment, change of the joints specimen cohesion and internal friction angle caused by of grou-ting, bolting and grouting are analyzed. Based on the Mohr-Cou-lomb model and simple coulomb sliding model criterion, bolting and grouting control jointed slope deformation effect is analyzed by use of discrete element UDEC. The results show that shear strength of joint fissure rock mass can be improved by reinforce-ment of anchor grouting, effectively restraining the joint weak surface deformation, developing the self-stabilizing capacity of the rock mass and providing experimental and theoretical basis for ap-plication of anchor grouting process in joint weak surface.

关 键 词：节理弱面 剪切强度 柔性支护 锚注 数值模拟 

分 类 号：TD325[矿业工程—矿井建设]