Core Points - The completion of the Binhui Tunnel, measuring 21.17 kilometers, marks a significant milestone for the Yukun High-Speed Railway, being the first tunnel over 20 kilometers in length in Southwest China [1][3] - The Yukun High-Speed Railway spans approximately 700 kilometers, with 388.6 kilometers located within Yunnan Province, and is designed for a maximum speed of 350 kilometers per hour [6] Summary by Sections - Tunnel Completion: The Binhui Tunnel, located in Yiliang County, Zhaotong City, Yunnan Province, is a dual-tube single-line design and is classified as a high-risk tunnel due to its complex geological conditions [3] - Construction Progress: With the completion of the first tunnel over 20 kilometers, the overall tunnel completion rate in Yunnan Province for the Yukun High-Speed Railway has reached 85%, and over 95% of bridge and tunnel construction is completed [4] - Future Impact: Once operational, the Yukun High-Speed Railway will significantly reduce travel time between Chongqing and Kunming [6]
全长21.17公里 渝昆高铁首座超20公里特长隧道贯通
Yang Shi Xin Wen Ke Hu Duan·2025-08-19 06:39