营盘路湘江隧道立体交叉段明挖改暗挖可行性分析及施工风险控制

Practical analysis and construction risk control for cross from open to underground excavation in xiangjiang yingpanlu tunnel

文章针对长沙市营盘路湘江隧道立体交叉段间距小、地质差、周边环境复杂等特点,为解决施工中出现的难题,提出了明挖改暗挖方案,实施前根据类似工程经验对方案可行性进行了研究,方案确定后对安全性进行计算分析,对设计施工阶段风险源采取了相应的措施,确保了施工安全。

On the basis of small distance between cross tunnels and poor geology, complicated environment in Xiangjiang Yingpanlu Tunnel,to solve the difficulty problems during construction, a schedule from Open to Underground Excavation is put forward.Before application,practical analysis is made according to similar case.After schedule determined,then the safety of procedure is calculated, in the process, proper measures will be taken to avoid risk, and construction safety will be protected.The method in this paper will provide some useful reference to similar engineering.