从一些典型双洞小净距隧道施工等多方面认识入手,总结了小净距隧道设计和施工各方面的经验,其中包括合理净距取舍、超前支护、开挖方法、断面形式设计、中夹岩加固、支护衬砌参数。同时对小净距隧道施工中的几个重要方面作出了比较全面的经验总结,并提出了建议。 From some aspects such as the construction of some typical double-hole narrow-gap tunnels and so on, this article summarizes the experience of design and construction of small clear-distance tunnels, including reasonable clearance, advanced support, excavation method, section design Rock reinforcement, support lining parameters. At the same time, we made a more comprehensive summary of the experiences in several important aspects of the construction of small clear distance tunnels and put forward some suggestions.