黄土地区公路隧道富水层段施工技术研究

Study on the Construction Technique of Highway Tunnel Water-rich Layer in Loess Area

文中对双侧壁导坑法和环形开挖留核心土法两种施工方案进行比选。因双侧壁导坑法具有施工中变形小,在隧道跨度较大条件下,地表下沉小的优点,结合静宁隧道的工程特点,采用了双侧壁导坑法,并对施工方案进行改进。对类似工程地质条件下的公路隧道施工有一定借鉴意义。

In the paper,the author compares with the double side drift method and the circular excavation for core making method.Because the advantage of the double side drift is a small deformation and a small ground depression in the condition of large span,according to the characteristic of the Jingning tunnel,double side drift method is adopted.And then,the construction program is improved.It is a certain significance for tunnel construction in the similar engineering gcological condition.