科技创新与应用2025，Vol.15Issue(26)：99-102,4.DOI:10.19981/j.CN23-1581/G3.2025.26.023
高地应力软岩隧道大变形控制技术研究
何伊琦1
作者信息
- 1. 中铁十五局集团第四工程有限公司,郑州 450000
- 折叠
摘要
Abstract
Large deformation of soft rock with high ground stress is a construction problem faced by tunnels with unfavorable geological conditions.As the geological conditions of tunnel construction become more and more complex,large deformation disasters have become a key problem that needs to be solved in tunnel construction.Research on large deformation control measures is important to ensure construction safety and reduce construction costs play an important role.Taking the Daliangshan Tunnel in Southwest China as an example,this paper uses FLAC3D numerical analysis and other methods to carry out research on large deformation control measures for soft rock.The research results show that the composite supporting structure can reduce the plastic zone of surrounding rock by 61.24%,and the tunnel deformation by about 50%,field applications show that with the increase of support length,the double-layer initial support structure can effectively control the large deformation of weak surrounding rock with high ground stress.The above research results show that the double-layered initial supporting structure can effectively control the occurrence of large deformation of surrounding rock and can provide design reference for similar projects.关键词
高地应力/软岩大变形/变形控制/数值分析/塑性区Key words
high ground stress/large deformation of soft rock/deformation control/numerical analysis/plastic zone分类
交通工程引用本文复制引用
何伊琦..高地应力软岩隧道大变形控制技术研究[J].科技创新与应用,2025,15(26):99-102,4.
