摘要
为解决双线软岩隧道施工中普遍存在沉降和收敛过大、初期支护变形侵限导致拆换拱的现象,通过介绍兰渝铁路两水隧道施工中应用的几种工法,根据围岩监控量测数据分析,从安全、进度和设备利用方面进行比选,得出大拱脚台阶法比较适合于双线软岩隧道的施工。
Serious settlement, convergence and deformation always occur during the construction of double-track railway tunnels located in soft ground. 3-bench 7-step construction method, CRD construction method and enlarged-arch-foot bench method are adopted in the construction of Liangshui tunnel on Lanzhou-Chongqing railway. These three construction methods are compared in terms of safety, advance rates and equipment availability. It is concluded that enlargedarch-foot bench method is more suitable for the construction of double-track railway tunnels located in soft ground.
出处
《隧道建设》
2010年第2期134-136,共3页
Tunnel Construction
关键词
软岩隧道
变形控制
监控量测
大拱脚台阶法
tunnel in soft ground
deformation control
monitoring
enlarged-arch-foot bench method
