摘要
山岭城市的市政大跨隧道下穿新近冲沟回填区,工程条件极为不利,需采取特殊有效的工程措施以保障工程安全建设。该文依托工程实例,探讨隧道下穿新近回填土的措施。结果表明:采取双层大管棚超前支护、系统注浆管加固外围软弱土层、基底设置微型钢管桩、双层初期支护拱架等措施,并结合双侧壁导坑开挖工法,可保障工程顺利建设,其成果可为今后类似工程提供参考。
The engineering conditions of the municipal long-span tunnel under-crossing newly backfilled area in mountainous cities are extremely unfavorable,so special and effective engineering measures need to be taken to ensure the safe construction of projects.This paper discussed the measures for such construction through an engineering case.The results showed that measures such as advanced support by double-layer large pipe sheds,system grouting pipes to strengthen the outer weak soil layer,setting of micro steel pipe piles at the base,and double-layer initial support arches can ensure the smooth construction of the project.The results provide reference for similar projects in the future.
出处
《重庆建筑》
2021年第12期49-51,共3页
Chongqing Architecture
关键词
山岭城市
大跨隧道
新近回填土
技术应用
mountainous city
large-span tunnel
newly backfilled soil
technological application
作者简介
胡文亮(1985-),男,河南驻马店人,研究生,高级工程师,主要从事隧道及岩土工程设计研究。
