摘要
针对某国外铁路工程高含水量火山堆积层隧道开挖遇到的大变形问题,文章首先介绍工程地质背景,分析隧道开挖大变形特征;然后为解决地层大变形导致的失稳问题,针对性地采取封闭地表、洞内注浆、洞内置换泥浆等措施,并详细论述各控制方法的施工工艺;最后,总结其中关键技术,以期为类似工程提供参考。
Focusing on the large deformations encountered during tunnel excavation in volcanic deposits with high water content for an overseas railway engineering project,this article introduces the engineering geological background and analyzes the characteristics of large deformations during tunnel excavation.To address the instability caused by large deformation of the stratum,this article adopts targeted measures such as sealing the surface,grouting inside the tunnel,and replacing mud within the tunnel.This article discusses the construction technology of each control method in detail,summarizes the key techniques and provides reference for similar projects.
出处
《现代城市轨道交通》
2023年第12期85-89,共5页
Modern Urban Transit
基金
中国国家铁路集团有限公司科技研究开发计划(K2022G061)。
关键词
隧道开挖
火山堆积层
高含水量
变形控制
国外铁路
tunnel excavation
volcanic deposit
high water content
deformation control
overseas railway
