江西建材Issue(4)：224-225,238,3.
大断面软弱围岩隧道施工方案比选分析
Comparison and Selection Analysis of the Construction Scheme of the Weak Surrounding Rock Tunnel With Large Section
何昌军1
作者信息
- 1. 四川交通建设集团有限公司,四川 成都 610041
- 折叠
摘要
Abstract
In order to explore the construction method of large-section soft surrounding rock tunnel and improve the tunnel engineering quality,this paper combined with the construction practice of a tunnel project,proposed two schemes of double-side diversion method and three-step seven-step method,and used MIDAS model for simulation analysis.The practice shows that the maximum shear force occurs in invert and side wall during the construction of double-sidewall heading method and three-step seven-step method.However,by setting large side walls,the double-side wall diversion method can support the arch load,provide protection for the side walls and inverts,and avoid vertical and horizontal displacement.To sum up,in the face of complex geological conditions and large structural stress,double-side wall heading method can im-prove the deformation of side wall and arch and optimize the structural force.关键词
软弱围岩/大断面隧道/施工方案Key words
Soft surrounding rock/Large-section tunnel/Construction scheme分类
交通工程引用本文复制引用
何昌军..大断面软弱围岩隧道施工方案比选分析[J].江西建材,2025,(4):224-225,238,3.
