Core Points - The completion of the Binghui Tunnel, a 21.17-kilometer long tunnel, marks a significant milestone for the Yukun High-Speed Railway, being the first ultra-long tunnel over 20 kilometers in Southwest China [1][3] - The tunnel features a dual-tube single-line design and is classified as a first-level high-risk tunnel due to its complex geological conditions [3] - The Yukun High-Speed Railway is a crucial part of China's "Eight Vertical and Eight Horizontal" high-speed rail network, with a total length of approximately 700 kilometers, significantly reducing travel time between Chongqing and Kunming [5] Construction Challenges - The construction faced multiple complex geological issues, including soft rock deformation and water inflow, leading to the proposal of 37 emergency solutions by participating units to enhance construction efficiency [3] Economic Impact - Once fully operational, the Yukun High-Speed Railway will greatly improve transportation convenience in the Southwest region and promote regional economic collaboration [5]
渝昆高铁首座超20公里特长隧道贯通 区域交通大提速
Yang Shi Wang·2025-08-19 08:20