ISSN 2096-4498

   CN 44-1745/U

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Tunnel Construction ›› 2007, Vol. 27 ›› Issue (4): 65-68.DOI: B

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A Case Study on Excavation and Primary Reinforcement
Construction of Largespanned Highway Tunnels

ZHANG Kai   

  1. Guangzhou Metro Corporation
  • Received:2007-01-12 Revised:2007-04-02 Online:2007-08-20 Published:2009-12-04

Abstract:

Taking Longtoushan tunnel on east Guangzhou section of Beijing~Zhuhai national highway as case history, the author presents the cutting of the side/front portal slopes of the tunnel, the installation of the forepoling pipe roof for the portal section, the excavation of the tunnel by means of double side drift construction method and the installation of the advance support and the primary reinforcement, which can provide reference for similar works in the future.

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