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隧道建设(中英文) ›› 2013, Vol. 33 ›› Issue (3): 231-236.DOI: 10.3973/j.issn.1672-741X.2013.03.011

• 施工技术 • 上一篇    下一篇

长沙营盘路湘江隧道分岔大跨施工技术

荆永军,樊至,欧阳刚杰,陈长强,许玉民   

  1. (中铁隧道股份有限公司, 河南郑州 450000)
  • 收稿日期:2012-12-08 修回日期:2013-01-28 出版日期:2013-03-20 发布日期:2013-03-23
  • 作者简介:荆永军(1980—),男,河南郑州人,2003年毕业于兰州铁道学院土木工程专业,本科,工程师,主要从事隧道及地下工程施工技术管理工作。

Construction Technology for Fork Section of Yingpanlu Xiangjiang River Crossing Tunnel in Changsha, China

JING Yongjun, FAN Zhi, OUYANG Gangjie, CHEN Changqiang, XU Yumin   

  1. (China Railway Tunnel Stock Co., Ltd., Zhengzhou 450000, Henan, China)
  • Received:2012-12-08 Revised:2013-01-28 Online:2013-03-20 Published:2013-03-23

摘要:

长沙营盘路湘江隧道匝道与正洞分岔合流大跨段断面大、变化多、埋深浅、地质差、受力变形复杂。为了安全顺利地完成合流大跨段开挖,介绍了一套完整的分岔大跨合流段施工技术,并对开挖断面渐变分部、异型二次衬砌等关键控制技术进行了详细阐述。实践证明,本分岔合流段大跨在埋深浅、地质差、环境复杂的情况下采用合适的地层加固措施、不同断面的合理渐变、超大断面的合理分块、保留临时支撑施作二次衬砌等技术是切实有效的,可为其他类似工程施工提供参考。

关键词: 长沙营盘路湘江隧道, 分岔大跨, 初期支护, 异型二次衬砌, 监控量测

Abstract:

The junction section of Yingpanlu Xiangjiang river crossing tunnel has changing large crosssection, shallow overburden, poor geological conditions and complex stressing conditions. The technologies used for the construction of the fork section of the tunnel, especially the excavation sequence and the secondary lining of the tunnel section with changing large crosssection, are presented in the paper. The practice demonstrates that the technologies adopted are feasible for the specific conditions of the works. 

Key words: Yingpanlu Xiangjiang river crossing tunnel in Changsha, large span section, primary support, secondary lining, monitoring