The Hongyuan No. 2 Tunnel on the Sichuan-Qinghai Railway was bored through on November 14; it is 5,536 meters long and took four years to build.
Broadcast 14 November 2026 · Event date 14 November 2026
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The Hongyuan No. 2 Tunnel on the Sichuan-Qinghai Railway was bored through on November 14; it is 5,536 meters long and took four years to build.
Today, November 14, the Hongyuan No. 2 Tunnel, a key project controlling the overall progress of the Sichuan-Qinghai Railway linking Chengdu in Sichuan and Xining in Qinghai, was bored through. Located in Songpan, Sichuan, the tunnel has an average elevation of 3,700 meters and is 5,536 meters long. Construction took four years.川青铁路全线控制性工程——红原2号隧道贯通