江西建材Issue(5)：276-278,284,4.
软弱围岩隧道变形特性及控制研究
Study on Deformation Characteristics and Control of Tunnel With Weak Surrounding Rock
孔佑归1
作者信息
- 1. 贵州省公路工程集团有限公司,贵州 贵阳 550001
- 折叠
摘要
Abstract
In order to improve the deformation control effect of soft surrounding rock tunnel,this paper relies on a highway tunnel project in Guizhou Province to study the effects of bolt length,shotcrete thickness and steel arch spacing on the deformation control effect of surrounding rock through Midas/GTS 3D software system.The results show that the deformation rate of surrounding rock is fast and the deformation amount is large after excavation,and the timely input of initial support is very important to control the deformation of surrounding rock.Increasing the length of bolt and the thickness of shotcrete can effectively reduce the settlement of surrounding rock arch and have little effect on the deformation of invert.The addition of steel arch can reduce the deformation of invert,but increase the settlement of arch.Under the premise of ensuring the construction quality,the best setting is 0.5B bolt length,30 cm thick shotcrete and steel arch with 0.8 m spacing.关键词
软弱围岩/变形特性/控制措施/有限元分析Key words
Weak surrounding rock/Deformation characteristics/Control measures/Finite element analysis分类
交通工程引用本文复制引用
孔佑归..软弱围岩隧道变形特性及控制研究[J].江西建材,2025,(5):276-278,284,4.
