Study of construction method of tunnel in shallow broken rock mass

QIAO Chun-jiang; CHEN Wei-zhong; WANG Hui; TIAN Hong-ming; TAN Xian-jun

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Study of construction method of tunnel in shallow broken rock mass

更新时间：2026-06-25

- Study of construction method of tunnel in shallow broken rock mass
- Vol. 32, Issue S2, (2011)
- 作者机构：
  
  1. ．中国科学院武汉岩土力学研究所,武汉,430071
  2. ．中交第二公路勘察设计研究院有限公司,武汉,430056
  3. ．山东大学岩土与结构工程研究中心,济南,250061
- 作者简介：
- 基金信息：
- DOI：
  CLC： U452.2
- Online First：26 August 2011，
  
  Published：2011
- 稿件说明：
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QIAO Chun-jiang, CHEN Wei-zhong, WANG Hui, et al. Study of construction method of tunnel in shallow broken rock mass[J]. 2011, 32(S2).
DOI：

QIAO Chun-jiang, CHEN Wei-zhong, WANG Hui, et al. Study of construction method of tunnel in shallow broken rock mass[J]. 2011, 32(S2). DOI：

摘要

西藏扎墨公路嘎隆拉隧道所处地域地质条件复杂，受地质构造的影响，隧道口地层节理裂隙特别发育、岩石强度低，围岩自稳能力差，给隧道的施工安全带来很大影响。通过数值仿真研究破碎地层采用全断面、台阶法和CD法施工时围岩和支护结构稳定性，提出适合嘎隆拉隧道破碎围岩地层特点的三台阶开挖法。在此基础上，运用三维数值仿真计算嘎隆拉隧道三台阶法开挖过程中的围岩稳定性，研究隧道开挖时围岩和衬砌的受力变形情况。研究成果为该隧道施工和同类工程建设提供了理论依据和实践经验

Abstract

The Galongla tunnel of Zhamo Highway in Tibet was constructed under complex geological conditions and influenced by geological structure. Joint and cracks of stratum in the tunnel portal are developed extremely. The main characteristics of surrounding rock are low strength and bad self-stability which have great influence on the safety of tunnel construction. Through numerical simulation

the stability of surrounding rock and supporting structure is studied by using whole section method

bench method and CD method to excavate in broken stratum. The three-bench method appropriating for broken rock mass characteristic of Galongla tunnel is proposed. On this basis

the stability of surrounding rock during excavation process using three-bench method is studied by 3D numerical simulation; and the stress and deformation condition of surrounding rock and lining during excavation process are also researched. The results provide a theoretical basis and practical experience for this tunnel and similar engineering construction

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