渝昆高铁最长隧道贯通

重庆晨报2025-12-11

记者从京昆高铁西昆公司获悉，12月10日上午，渝昆高铁全线最长隧道——彝良隧道安全贯通，为全线建成通车打下坚实基础。据了解，彝良隧道位于云南省昭通市境内，全长24.8公里，由中铁二院勘察设计、中国铁建大桥局和中铁五局负责对向掘进施工，是渝昆高铁重难点控制性工程。由于穿越乌蒙山腹地，隧道的地质构造复杂，为一级高风险隧道，建设难度极大。据介绍，渝昆高铁全长约700公里，其中云南段长388.6公里，是...

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渝昆高铁 最长隧道贯通

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渝昆高铁最长隧道贯通