10月20日，汉巴南铁路建设现场再次传来捷报，郑家沟隧道顺利贯通，该隧道的贯通为跨越巴河连接巴中至恩阳境内铁路线奠定坚实基础。
郑家沟隧道位于巴州区光辉镇境内，全长1200米，为双线中长隧道，是全线重点工程之一。
Countdown to Opening: All Drill-and-Blast Tunneling Sections on the Northern Extension of Chongqing Rail Transit Line 5 Successfully Break Through
下一篇First Tunnel Over One Kilometer on the Chizhou-Huangshan Railway Successfully Breaks Through
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Lize City Air Terminal Underground Main Structure Nearing Completion: Maximum Transfer Walk Under 4 Minutes After Operation
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