摘要
为了研究锚杆的横向效应并揭示其支护机理,建立了非连续岩体中锚杆横向抗剪效应的三维研究模型,进行相应的物理模型试验,研究了非连续岩体中锚杆的导轨作用效应.结果表明:在剪力作用下锚杆的横向效应对岩体的稳定性存在负面影响,在非连续面处产生了明显的导轨作用效应;锚杆导轨作用效应主要产生条件是剪切位移达到一定数值;锚杆直径越大,产生导轨作用效应所需的外载剪切位移越小,且分离量越大.
In order to study the transverse effect of bolt, the 3D physical model of transverse shearing resistance effect of bolt in discontinuous rock mass was obtained, and the＂Railway rail effect＂ of bolt under shear loads was studied. The results show that the bolt has a negative effect on the stability of discontinuous rock mass and the ＂Railway rail effect＂ of bolt occur near the discontinuous plane of rock mass under shear loading. The mainly occurring condition of this effect is that the large shear displacement value applied on the models. The bolt diameter is larger, the required loading displacement value for this effect is smaller, and the separating value caused by the effect is larger.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2007年第5期614-617,共4页
Journal of China University of Mining & Technology
基金
国家重点基础研究发展规划(973)项目(2002CB412703)
关键词
非连续岩体
锚杆
支护机理
导轨作用
物理模拟
discontinuous rock mass
bolt
supporting mechanism
railway effect
physical simulation
作者简介
贾颖绚（1978-），女，河北省徐水县人，讲师，博士研究生，从事地下工程与城市轨道工程等方面研究E-mail：yxjia@126．com Tel：010-51466913
