全长24.8公里 渝昆高铁全线最长隧道右线贯通|岳脱得精光让我挺进去视频

  中新网昭通11月6日电 (胡国英 苟晨菲)经过1460多天昼夜奋战,由中国铁建大桥局承建的渝昆高铁全线最长隧道彝良隧道右线6日安全贯通。

  彝良隧道位于云南省昭通市境内,跨越盐津和彝良两县交界,全长24.8公里,最大埋深达920米,采用双洞单线的设计形式。所谓双洞单线,就是一座隧道“一分为二”,化作两个相邻且独立的隧道,分别为左线和右线,此次贯通的隧道为右线。

图为全长24.8公里的渝昆高铁彝良隧道右线贯通。罗扬 摄

  承建单位中国铁建大桥局渝昆高铁项目部经理饶胜斌介绍,此次隧道右线的贯通,精准探明了地质情况,同时极大地改善了隧道的通风和排水条件,有效减少了地质风险的叠加影响,将大幅提升后续施工的安全性与作业效率,为全隧按期贯通提供了保障。

  随着彝良隧道右线的贯通,渝昆高铁云南境内隧道已贯通47座,隧道贯通已超85%。目前,渝昆高铁云南段全面进入冲刺阶段,每天投入1.4万余名施工人员,1500余台大型机械设备,全力推进重难点项目建设,路基土石方工程已完成99.5%,桥隧施工完成97.5%。

  渝昆高铁全长约700公里,其中云南段长388.6公里,设计时速350公里,是云南省内首条时速达350公里的高速铁路,全线建成通车后,重庆到昆明的行车时间将大幅压缩,对构建新发展格局、促进沿线地区经济社会高质量发展具有重要意义。(完)

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发布于:北京市