摘要
浅埋隧洞在穿越复杂地质段时容易发生隧洞塌方、冒顶等地质灾害。针对牛栏江-滇池补水工程输水线路上4处浅埋不良地质洞段的工程地质条件,在研究其施工风险的基础上,对隧洞开挖支护处理方案进行了研究。根据研究结果,施工采用暗挖法,经采取超前预加固方案、加强一次支护、短循环进尺等工程措施后,隧洞得以顺利贯通,且施工过程中地表建筑沉降变形小,完工后洞段变形收敛快。
Geological disasters such as tunnel collapse and roof falling often happen during construction of shallow - buried tunnel in complicated geological environment. The supporting schemes for four shallow - buried sections in an adverse geoh,gi,.al environment, located along the route of Niulan River - Dianchi Lake Water Supplement Project, were studied on the basis of ana- lyzing the construction risk of the shallow - buried tunnel in that area. Covered excavation method was adopted and the tunnel was completed smoothly when effective measures such as advanced pre - reinforcement, focusing on first supporting, short cyclical ibotage were adopted. During the construction process, the settlement of surface buildings were relative smaller and the deforma- tion of the tunnel was converged quickly after the construction.
出处
《人民长江》
北大核心
2013年第12期44-46,共3页
Yangtze River
关键词
浅埋隧洞
不良地质
预加固
牛栏江-滇池补水工程
shallow-buried tunnel
adverse geological environment
pre-reinforcement
underground river
Niulan River-Dianchi Lake Water Supplement Project
作者简介
孙文杰，男，工程师，主要从事水利水电工程设计工作。E—mail：1786313@qq．com
