土工基础

›› 2012, Vol. 26 ›› Issue (3): 66-68.

• 工程实录 • 上一篇    下一篇

黄土隧道洞口浅埋偏压段关键施工技术研究

 刘春龙，朱苦竹，江 凡   

  1. （桂林理工大学土木与建筑工程学院，桂林 541004）
  • 收稿日期:2011-09-09 出版日期:2012-06-20 发布日期:2012-06-25
  • 作者简介:刘春龙（1982-），男，桂林理工大学土木与建筑工程学院硕士研究生。
  • 基金资助:

    基金项目：国家自然科学基金（41102202）；广西自然基金，山区公路隧道洞口病害调查与稳定性分析（编号-2010GXNSFB013012）。

Construction Aspects of Tunnel Entrance with Shallow Covered Slopes in Loess

LIU Chunlong, ZHU Kuzhu, JIANG Fan   

  1. （College of Civil Engineering and Architecture, Guilin University of Technology, Guilin 541004）
  • Received:2011-09-09 Online:2012-06-20 Published:2012-06-25

摘要： 结合郑西铁路客运专线潼洛川隧道出口工程实例，介绍了大断面黄土隧道洞口浅埋偏压段的关键施工技术：长管棚加导向墙与超前小导管预支护，CRD施工方法，及利用监控量测反馈信息指导施工。实践证明，所采取的措施有效地控制了施工变形量，防止隧道塌方事故，为今后类似工程提供了有益的借鉴和指导。

关键词: 长管棚, 小导管, CRD法, 监控量测

Abstract: This paper documents a case history of the Tong-Luochuan Tunnel construction in the Zhengzhou-Xi'an high speed passenger rail project. The construction aspects of the construction of a large cross section with shallow covered slope in the collapsible loess are introduced. These techniques include: Long pipe roof with guide wall and small diameter guide pipe grouting preshielding; Cross Diaphragm (CRD) method; Observation Method (construction is guided with the observed information). The construction practice indicated that these construction techniques effectively reduced the deformation during the construction and prevented the tunnel collapsing accidents.

Key words: Long Pipe Roof, Small Diameter Guide Pipe Grouting, Cross Diaphragm (CRD) Method, Monitoring and Surveying