评论信息_国内最长红黏土隧道银西铁路庆阳隧道贯通

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国内最长红黏土隧道银西铁路庆阳隧道贯通

由中铁隧道局集团承建的银（川）西（安）铁路庆阳隧道11日顺利贯通，创下了国内长度最长、断面最大的红黏土隧道施工纪录。中铁隧道局集团项目负责人介绍，庆阳隧道全长约14公里，最大开挖断面164.09平方米，红黏土段落达12.54公里，占全隧…

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