连拱隧道施工导致的节理岩质边仰坡失稳分析与处治  

The Instability Analysis of Stratofabric Rock Slope Caused by Construction of Multi-arch Tunnel

作　　者：付黎龙[1] 阳军生[1] 黄大成[1,2] 

机构地区：[1]中南大学土木建筑学院,湖南长沙410075 [2]湖南省常吉高速公路建设开发有限公司,湖南常德415003

出　　处：《公路工程》2008年第6期50-54,共5页Highway Engineering

基　　金：湖南省交通科技项目(200436)

摘　　要：连拱隧道边仰坡开挖范围大、受多次开挖扰动易失稳。针对常吉高速公路清水冲隧道节理岩质边仰坡,在现场勘察及量测结果分析的基础上,运用离散元软件UDEC进行稳定性分析。数值模拟结果表明,岩层节理的发育情况对边仰坡的稳定性影响很大。结合现场量测数据可以看到离散元法能很好的模拟岩质边仰坡失稳过程,在此基础上提出边仰坡加固措施,为相关工程提供参考。The excavation scope of Multi-arch tunnel slope is very large, which is easy to instabilize by several repetitious disturbances. According to the stratofabric rock slope of Qingshuichong Tunnel in Chang-Ji highway in this paper, and basing on site investigation and the analysis of measurement data, the analysis of its stability was used by distinct element software UDEC. The numerical simulation results showed that the development of stratofabric rock impacted on slope stability greatly, and reinforcement measures of slope can be suggested according to the simulation results. This paper can provide reference for the related projects.

关 键 词：连拱隧道 边坡稳定 离散元 数值模拟 

分 类 号：U457.3[建筑科学—桥梁与隧道工程]