大断面隧道开挖方案分析

Analysis of Tunnel Excavation Scheme for Large Section

采用数值有限元法,模拟分析了隧道浅埋段V类围岩采用双侧壁导坑法、CD工法和上下台阶法的隧道变形与受力特点,对比分析了不同开挖工法的优缺点,为该隧道施工方案的比选提供了依据,保证了工程的顺利施工,可供参考。

This paper adopts finite element method numerical simulation analysis, the section of V surrounding rock with double side heading method of shallow buried tunnel, CD construction method and step method ofttmnel deformation and stress characteristics, comparative analysis of the advantages and disadvantages of different excavation methods, for the tunnel construction schemes provide a basis. T o ensure the smooth construction o fthe project, for reference.