摘要
针对高海拔地区隧道围岩冻害问题,以西藏林拉高速公路米拉山隧道为研究背景,采用测试、弹性力学理论和数值模拟等方法对高海拔地区米拉山隧道围岩冻胀力及其影响因素进行了分析研究,分析了米拉山隧道的温度场变化规律,给出了隧道围岩冻胀力计算公式及其计算结果,探讨了各因素对高海拔隧道围岩冻胀力的影响规律,其研究成果为米拉山隧道设计与施工供了参考依据。也为今后高海拔隧道工程建设提供了一定的指导意义。
In view of the problem of the frost damage of tunnel surrounding rock in high altitude area to taking the Mira mountain tunnel of Tibet LLLA highway as the research background,the frost heaving force and its influencing factors of the surrounding rock of Mira mountain tunnel in high altitude area are analyzed by the method of testing,elastic mechanics and numerical simulation.The temperature field changes of the Mira mountain tunnel are also analyzed.The formula of frost heaving force of tunnel surrounding rock and its calculation results are given and the influence of various factors on the frost heaving force of tunnel surrounding rock in high altitude tunnel is discussed.The research results provide reference for the design and construction of Mira mountain tunnel.It also provides some significance for the construction of high altitude tunnel project in the future.
作者
龚彬
陈必光
Gong Bin;Chen Biguang(China Railway Erju 5th Engineering CO.,LTD,Chendu 610000,P.R. China;CCCC Second Highway Consultants Co..Ltd,Wuhan 430056,P.R.China)
出处
《地下空间与工程学报》
CSCD
北大核心
2018年第S2期613-618,共6页
Chinese Journal of Underground Space and Engineering
基金
西藏自治区重点科研项目(2016XZ01G31)
关键词
高海拔
米拉山隧道
冻胀力
影响因素
High altitude
Mira Mountain Tunnel
Frost heave
influencing factors
