文档介绍：第 31 卷第 4 期岩土力学
2010 年 4 月 Rock and Soil Mechanics Apr. 2010
文章编号:1000-7598 (2010) 04-1163-05
深埋隧道层状围岩变形特征分析
李晓红 1,夏彬伟 1,李丹 2,韩昌瑞 2
(,重庆 400030;,武汉 430071)
摘要:层状岩体在地下工程中经常遇到的,它具有明显的各向异性力学性质。结合共和隧道现场监测和数值模拟相结合的
方法对层状岩体的破坏特征进行了分析,研究结果表明:围岩的变形位移、破坏区都主要集中隧道拱顶右侧,即靠河侧大于
靠山侧。隧道围岩变形破坏区不在最大主应力方向上,而是在岩体层理垂直方向。层状岩体中洞室变形破坏特征除了因地形
产生的偏压影响外,更重要的是受地层结构特征的影响,即与层状岩体的力学性质极大相关,其结果可为指导隧道的施工和
设计提供有效依据。
关键词:深埋隧道;层状岩体;围岩变形特征
中图分类号:TU 443 文献标识码:A
Deformation characteristics analysis of layered rockmass in deep buried tunnel
1 1 2 2
LI Xiao-hong , XIA Bin-wei , LI Dan , HAN Chang-rui
( Education Ministry’s Key Lab. for the Exploitation of Southwest Resources and the Environmental Disaster Control Engineering, Chongqing
University, Chongqing 400030, China; of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China)
Abstract: Layered rockmass which is always met in underground engineering has obvious anisotropic mechanical properties. Based
on the in-situ monitoring of Gonghe Tunnel and numerical simulation, the failure feature of layered rockmass was analyzed; and the
results show that the surrounding rock deformation and displacement, contact pressure and fracture zone mainly exist on the right side
of the tunnel vault, that is, the side near the r