市政技术2025，Vol.43Issue(7)：189-196,8.DOI:10.19922/j.1009-7767.2025.07.189
水位回升影响下大断面粉细砂隧道支护结构稳定性数值模拟研究
Numerical Simulation Study on the Stability of Supporting Structure of Large Section Fine Sand Tunnel Under the Influence of Water Level Rise
车志远 1冯成名 1王窑瑶 1伦康宝2
作者信息
- 1. 中国铁路北京局集团有限公司,北京 100089
- 2. 西安建筑科技大学资源工程学院,陕西西安 710055
- 折叠
摘要
Abstract
The rich water fine sand formation has the characteristics of high water content,loose structure,and poor self stability.As the construction progress continues to advance,the tunnel section that completed the support in the early stage stops dewatering,and the groundwater level gradually rises,causing significant deformation of the sup-port structure and even cracking,which seriously affects the safety of the tunnel.Based on this,taking the Xiang-shan Tunnel Project of Zhonglan Railway as an example,a numerical analysis model of a large section fine sand tunnel was constructed by Midas GTS NX finite element software to explore the influence of water level rise on the structural stress and deformation characteristics of the initial support and secondary lining of the tunnel.The re-search results indicate that the rise of water level has led to significant deformation and structural stress changes in the initial support and secondary lining of the tunnel.Especially when the water level rises to the arch waist position,the maximum principal stress at the arch foot position has exceeded the bearing limit of the lining structure with a risk of damage.The research results confirm that the rise of groundwater level will significantly affect the safety of tunnel structures,providing theoretical reference and practical guidance for the related projects.关键词
大断面隧道/粉细砂/水位回升/数值模拟/稳定性分析Key words
large section tunnel/fine sand/water level rise/numerical simulation/stability analysis分类
交通工程引用本文复制引用
车志远,冯成名,王窑瑶,伦康宝..水位回升影响下大断面粉细砂隧道支护结构稳定性数值模拟研究[J].市政技术,2025,43(7):189-196,8.
