三台阶七步法在大断面浅埋偏压软弱围岩隧道中的应用

田佳; 刘军; 王改鹏

doi:10.3973/j.issn.1672-741X.2012.z1.018

隧道建设 >

2012 , Vol. 32 >Issue 增刊1: 85 - 89

DOI: https://doi.org/10.3973/j.issn.1672-741X.2012.z1.018

施工技术

三台阶七步法在大断面浅埋偏压软弱围岩隧道中的应用

田佳 ,
刘军 ,
王改鹏

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（中铁一局集团第五工程有限公司，陕西宝鸡 721006）

田佳（1981—），男，陕西高陵人，2005年毕业于西安建筑科技大学，大专，工程师，从事铁路工程施工技术及技术管理工作。

收稿日期: 2012-09-28

修回日期: 2012-10-20

网络出版日期: 2013-02-19

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Application of Threebench Sevenstep Excavation Method in Tunnels  with Large Crosssection, Shallow Cover and Asymmetricallyloaded  Soft and Weak Surrounding Rocks

TIAN Jia ,
LIU Jun ,
WANG Gaipeng

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(The Fifth Engineering Co., Ltd. of China Railway First Group, Baoji 721006, Shaanxi, China)

Received date: 2012-09-28

Revised date: 2012-10-20

Online published: 2013-02-19

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摘要

对国内浅埋偏压软弱围岩隧道施工工法进行调查，综合分析对比，并以此为基础在合福铁路客专闽赣V标庵源山隧道、凤凰山隧道、范墩坪隧道、九台山隧道浅埋偏压段，采取相关技术措施、组织手段，利用三台阶七步法快速、安全地完成该四座隧道浅埋偏压软弱围岩段的施工。根据施工过程及结果，分析三台阶七步法施工大断面浅埋偏压软弱围岩隧道的施工重点、关键工序、采取的相关技术措施、组织手段，为以后同类隧道工程施工提供相关参考和依据。

关键词： 隧道; 浅埋偏压; 软弱围岩; 三台阶七步法; 卸载加固; 反压回填

本文引用格式

田佳 , 刘军 , 王改鹏 . 三台阶七步法在大断面浅埋偏压软弱围岩隧道中的应用[J]. 隧道建设, 2012 , 32(增刊1) : 85 -89 . DOI: 10.3973/j.issn.1672-741X.2012.z1.018

Abstract

Threebench sevenstep excavation method is adopted in the Anyuan tunnel, Fenghuangshan tunnel, Fandunping tunnel and Jiutaishan tunnel with shallow cover and asymmetricallyloaded soft and weak surrounding rocks, on basis of investigation and analysis on construction technologies of shallowcovered tunnel with asymmetricallyloaded soft and weak surrounding rocks in China. The construction difficulties, key construction technologies and countermeasures of threebench sevenstep excavation method are presented. The paper can provide references for similar projects in the future.

Key words： tunnel; shallowcovered and asymmetricallyloaded; soft and weak surrounding rock; threebench sevenstep excavation method; unloading reinforcement; backpressure and backfilling

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