岩土工程学报2023，Vol.45Issue(z2)：284-287,4.DOI:10.11779/CJGE2023S20045
开挖及支护方案对隧道围岩稳定性的影响
Effects of excavation and support schemes on stability of surrounding rock of tunnels
虞永杰 1张麟 1宋泽仁 2郎晓明 3高沛沛 2苏雅4
作者信息
- 1. 舟山市交通工程管理中心,浙江 舟山 316100
- 2. 浙江甬舟复线一期高速公路有限公司,浙江 舟山 316100
- 3. 舟山市大桥建设管理中心,浙江 舟山 316100
- 4. 浙江大学建筑工程学院土木工程学系,浙江 杭州 310058
- 折叠
摘要
Abstract
The impact of excavation and construction methods on the stability of tunnels with general quality rock is studied.The construction plans are developed,taking into account two factors during tunnel construction:the installation of support and the time of support installation.Based on the Hoek-Brown criteria,numerical simulations of tunnel construction plans are performed using the FLAC3D to investigate the stability of the surrounding rock of tunnels based on the convergence constraint principle.The results indicate that the factor of whether or not support is installed has a significant impact on the shape and characteristics of the longitudinal characteristic curve of the tunnels.Under the condition of considering no support installation,the differences in the shape and characteristics of the longitudinal characteristic curve under different excavation conditions are not significant.Considering the time of support installation and whether or not support is installed does not have a significant impact on the safety factor of the surrounding rock.关键词
隧道/开挖/收敛约束法/纵向变形曲线/支护安装时机Key words
tunnel/excavation/convergence confinement method/longitudinal displacement profile/support installation time分类
建筑与水利引用本文复制引用
虞永杰,张麟,宋泽仁,郎晓明,高沛沛,苏雅..开挖及支护方案对隧道围岩稳定性的影响[J].岩土工程学报,2023,45(z2):284-287,4.
