介绍了景鹰高速公路北晨亭隧道明洞暗挖的施工技术。该隧道进入峡谷地段,根据线路设计有一地段隧道顶部露出原地面,经方案比选,采用先清理该地段表土,随后进行水泥稳定碎石分层回填压实,然后打设注浆管,实施注浆固结,形成壳体,最后在其保护下进行隧道暗挖施工成型。施工实践表明该施工方法合理、有效,对类似工程会提供有益借鉴。 The construction technology of Ming dynasty tunnel excavation at Jingchen Expressway in Jingying Expressway is introduced. The tunnel into the gorge area, according to the design of a section of the top of the tunnel exposed the original ground, the program than the election, the first clean-up of the lot surface, followed by cement stabilized graded backfill compaction, and then set up grouting pipe, the implementation of the note Pulp consolidation, the formation of shell, and finally under the protection of tunnel undercut construction molding. Construction practice shows that the construction method is reasonable and effective and will provide useful reference for similar projects.