公路隧道施工过程中围岩变形规律分析
Analysis on Surrounding Rock Deformation Law in Highway Tunnel Construction Process
耿利军 1盛兆旺 2宋立伟2
作者信息
- 1. 青岛地矿岩土工程有限公司,山东 青岛 266000
- 2. 青岛地质工程勘察院(青岛地质勘查开发局),山东 青岛 266000
- 折叠
摘要
不良地质条件下隧洞围岩变形一直是相关领域研究的重难点.文章以某公路隧道开挖项目为例,通过数值模拟手段分析了隧道施工过程中不同土-岩界面位置工况下的围岩变形规律.结果表明:地表沉降曲线呈"盆"状,沉降峰值出现在隧道中线位置处.不同土-岩界面位置工况下,地表沉降分布规律基本一致,主要差异为数值差异.
Abstract
The deformation of tunnel surrounding rock under adverse geological conditions has always been a key and difficult point in the research of related fields.Taking a highway tunnel excavation project as an example,this paper analyzes the deformation law of surrounding rock under the working conditions of different soil-rock interface positions during tunnel construction by means of numerical simulation.The results show that the surface settlement curve is in a"basin"shape,and the peak settlement appears at the middle line of the tunnel.Under the working conditions of different soil-rock interface positions,the distribution law of surface settlement is basically the same,and the main difference is numerical difference.
关键词
公路隧道/围岩变形/数值模拟/衬砌结构Key words
highway tunnel/surrounding rock deformation/numerical simulation/lining structure引用本文复制引用
出版年
2024
NETL
NSTL
万方数据