黄延高速公路彦麦沟黄土隧道综合施工技术

Integrative Technologies to Construct Yanmaigou Tunnel in Loess in Huangling-Yan′an Express Highway

结合工程实际,对黄土公路隧道的综合施工技术进行了探讨。主要对黄土隧道边仰坡防护技术、明洞施工技术、Ⅰ类及Ⅱ类围岩开挖和支护技术、超前小导管施工技术、结构防排水施工技术、洞身二次衬砌施工技术、仰拱施工技术以及洞内路面施工技术等进行了介绍,可为以后类似工程的施工提供借鉴作用。

Integrative technologies for building highway tunnels in loess are discussed in the light of engineering practice, covering mainly the technology for protecting front slopes, open-cut tunneling technology, excavation and shoring technology in wall rocks of Categories Ⅰ and Ⅱ, advance grouting with minor ducts, structural water prevention and drainage method, technology of secondary masonry in tunnel, technology for construction of inverted arch and technology for construction of road pavement in the tunnel, which may be used as reference for construction of similar projects in future.