以赤岭隧道进口小间距隧道工程为例,采用机械配合人工进行施工,分析了小间距隧道施工技术难点和关键点,总结了小间距隧道穿越断层的施工方法、控制技术和施工措施;提出采用综合技术和措施,充分保护并利用围岩自身承载能力,使围岩和支护共同作用,确保工程的施工安全和运营安全。 Taking the small distance tunnel project of Chiling tunnel as an example, the construction of the tunnel with small spacing is analyzed with the help of mechanical and manual construction. The construction technical difficulties and key points of the tunnel with small spacing are analyzed. The construction methods, control techniques and construction measures of the tunnel with small spacing are summarized. Comprehensive technology and measures to fully protect and make use of the carrying capacity of the surrounding rock so that the surrounding rock and support work together to ensure the construction safety and operational safety of the project.