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。

On basis of construction of several typical closelyspaced twin tube tunnels, the authors summarize the experience in the design and construction of closelyspaced tunnels, including the selection of the proper net spacing thickness, advance reinforcement, excavation methods, crosssection design, spacing column consolidation and reinforcement parameters. Furthermore, the authors make a complete summary and some recommendations on the critical aspects of construction of closelyspaced tunnels.