摘要
京沪高速济南连接线工程浆水泉隧道穿越黄金谷风景区,该区段属浅埋、超浅埋及局部浅埋等突变地形,施工难度大,环保要求高。通过对该区段的地质情况进行分析和总结,特别针对局部浅埋区段采用先明挖先行导坑上部覆盖土,再暗挖剩余岩层,先行导坑初支封闭后回填,最后开挖剩余导坑的技术,减少了对山体的扰动,小机械开挖的同时降低了对风景区的环保破坏,施工速度快,通过数值模拟分析,表明该方法的安全性满足要求,研究结论可供类似工程参考。
The Beijing-Shanghai high-speed Jinan connecting line engineering slurry water spring tunnel passes through the Golden Valley Scenic Area.The section of the area is a sudden terrain such as shallow burial,ultra-shallow burial,and partial shallow burial.The construction is difficult and the Environmental Protection requirements are high.This paper analyzes and summarizes the geological conditions of this section,especially for the partially shallow buried section,the upper cover of the first excavation of the upper part of the guide pit is used to excavate the remaining rock formations,and the initial support of the guide pit is closed and backfilled,and the technique of excavating the remaining guide pit is finally used.It reduces the disturbance to the mountain,the small mechanical excavation reduces the Environmental Protection damage to the scenic spot,and the construction speed is fast.The numerical simulation shows that the safety of this method meets the requirements.The research conclusions in this paper can be used for similar engineering reference.
出处
《建筑技术开发》
2019年第4期34-36,共3页
Building Technology Development
关键词
超大断面隧道
局部浅埋
半明半暗施工
oversized tunnel
local shallow burial
semi-bright and semi-dark construction
