隧道软弱围岩拆换拱施工技术  

Construction Technology of Removing and Replacing Arch in Weak Surrounding Rock of Tunnel

作　　者：信国军 Xin Guo-jun

机构地区：[1]中交一公局第五工程有限公司,北京100024

出　　处：《建筑技术开发》2021年第9期35-37,共3页Building Technology Development

摘　　要：由于低强度、稳定性差、变形持续时间长的特点,软弱围岩经常会出现大变形、崩溃和其他损害的现象。在隧道施工中导致强烈的初期支护结构变形甚至破坏,严重影响隧道施工和安全。从源头了解软弱围岩的地形特点,解决软弱围岩隧道施工过程中存在的问题,在分析隧道软弱围岩拆换拱的施工技术的基础上提出相关的解决措施,希望对相关从业人员有所帮助。Due to the characteristics of low strength,poor stability,and long deformation duration,the phenomena such as large deformation,collapse and other damage often occur on weak surrounding rocks.During the tunnel construction,it caused strong deformation or even destruction of the initial support structure,which seriously affected the tunnel construction and safety.The topographic characteristics of the weak surrounding rock from the source were understood,the problems existing in the construction of the weak surrounding rock tunnel were solved,and relevant solutions were put forward based on analysis of construction technology of the tunnel’s weak surrounding rock arch removal and replacement,hoping to help the workers in the relative field.

关 键 词：初期支护变形 限制入侵 隧道软弱围岩 施工技术 

分 类 号：TU74[建筑科学—建筑技术科学] U455.4[建筑科学—桥梁与隧道工程]