全长24.8公里 渝昆高铁全线最长隧道右线贯通|初尝少妇王老师的第一次在线观看
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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。
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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