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隧道建设(中英文) ›› 2012, Vol. 32 ›› Issue (增刊1): 85-89.DOI: 10.3973/j.issn.1672-741X.2012.z1.018

• 施工技术 • 上一篇    下一篇

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   

  1. (中铁一局集团第五工程有限公司,陕西宝鸡 721006)
  • 收稿日期:2012-09-28 修回日期:2012-10-20 出版日期:2012-11-20 发布日期:2013-02-19
  • 作者简介: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。

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   

  1. (The Fifth Engineering Co., Ltd. of China Railway First Group, Baoji 721006, Shaanxi, China)
  • Received:2012-09-28 Revised:2012-10-20 Online:2012-11-20 Published:2013-02-19

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

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