Group 1 - The Xi'an to Chongqing high-speed railway's key project, the Hechuan East Tunnel, has successfully completed construction after over 1000 days of effort, laying a solid foundation for the timely operation of the entire line [1] - The Hechuan East Tunnel is 7388 meters long and is a single-tube double-track tunnel, facing significant geological challenges with 96.7% of the surrounding rock classified as level IV and V, indicating high risk [4] - To ensure safety and progress in construction, the contractor has implemented simultaneous construction across six work fronts, focusing on technological innovation and problem-solving [4] Group 2 - The total length of the Xi-Yu high-speed railway's Ankang-Chongqing section is 478 kilometers, designed for a speed of 350 kilometers per hour, connecting various regions and enhancing transportation networks in the central and western areas of China [8] - Once operational, the railway will integrate with existing and under-construction high-speed rail lines, significantly improving travel convenience for local populations and contributing to rural revitalization and regional coordinated development [8]
西渝高铁控制性工程合川东隧道顺利贯通
Jing Ji Guan Cha Wang·2026-02-01 02:55