复杂地应力条件下软岩隧道施工关键技术研究
Research on Key Technology for Soft Rock Tunnel Construction under Complex Crustal Stress Condition
陈岳1
作者信息
- 1. 中铁二十局集团第四工程有限公司,山东 青岛 266061
- 折叠
摘要
软岩强度低、自稳能力差,在复杂地应力作用下更易出现大变形、支护结构破坏等灾变现象.文章以复杂地应力隧道施工为切入点,分析了软岩隧道地应力分析方法,重点阐述现场测试手段、初始模拟分析方法与围岩应力应变特性试验,帮助施工单位真实了解工程现场地应力条件,客观评估复杂工况对隧道施工形势造成的实际影响.文章还阐述了复杂工况下的软岩隧道施工路径,旨在有效控制施工过程中的围岩大变形问题,保证施工安全和施工进度,减小地应力对围岩的影响.
Abstract
Soft rock has low strength and poor self-stabilization capacity.Under the action of complex crustal stress,it is more prone to catastrophic phenomena such as large deformation and support structure failure.Taking the construction of complex crustal stress tunnel as the breakthrough point,this paper analyzes the crustal stress analysis method of soft rock tunnel,focuses on the field test method,initial simulation analysis method and surrounding rock stress and strain characteristic test,helping construction units to truly understand the crustal stress condition of the engineering site and objectively evaluate the actual influence of complex working conditions on the tunnel construction situation.It also expounds the construction path of soft rock tunnel under complex working conditions,aiming at effectively controlling the large deformation of surrounding rocks in the construction process,ensuring construction safety and construction progress,and reducing the influence of crustal stress on surrounding rocks.
关键词
复杂地应力条件/软岩隧道/施工关键技术Key words
complex crustal stress condition/soft rock tunnel/key construction technology引用本文复制引用
出版年
2024
NETL
NSTL
万方数据