土木工程与管理学报2012，Vol.29Issue(3)：112-115,4.
冻融环境下拉脊山隧道防寒保温设计
Cold Insulation Design of Lajishan Tunnel in Freeze-Thaw Environment
李靖 1李鸿博2
作者信息
- 1. 武昌理工学院城市建设学院,湖北武汉430223
- 2. 中交第二公路勘察设计研究院有限公司,湖北武汉430052
- 折叠
摘要
Abstract
Lajishan tunnel is an extra-long highway tunnel in high altitude and cold zones, with extremely high temperature 28. 7℃ and extremely minimum temperature - 37 ℃. The maximum depth of frozen soil of tunnel entrance is 1. 60 m. Tunnels prone to frost damage phenomena in freeze-thaw environment, which seriously affects the use of the tunnel. This paper analyzes the tunnel frost damage and its common measures, on which basis we get the depth of freeze-thaw circle and the corresponding type and thickness of thermal insulation layer, variation between the different rock porosity through calculation and analysis. Cold insulation design for Lajishan tunnel has been conducted according to the calculation results and engineering experience. Some related measures can be served as reference for similar tunnels.关键词
冻融环境/拉脊山隧道/防寒保温Key words
freeze-thaw environment/ Lajishan tunnel/ cold insulation分类
交通工程引用本文复制引用
李靖,李鸿博..冻融环境下拉脊山隧道防寒保温设计[J].土木工程与管理学报,2012,29(3):112-115,4.
