14座隧道全线贯通

Core Viewpoint - The successful completion of the Zhongliang Mountain Tunnel marks a significant milestone for the Chengyu Central High-speed Railway, laying a solid foundation for its timely operation [2] Group 1: Project Progress - The Chengyu Central High-speed Railway has completed all 14 tunnels in the Chongqing section, with the last tunnel being completed on January 30 [2] - The railway line spans 292 kilometers from Chongqing North Station to Chengdu Station, designed for a speed of 350 kilometers per hour [2] - Key construction components such as the roadbed, bridge substructures, and box girder prefabrication are completed, with 90% of box girder installation finished [2] Group 2: Economic and Connectivity Impact - The Chengyu Central High-speed Railway will connect with multiple existing and under-construction lines, significantly reducing travel time between Chengdu and Chongqing [2] - The railway is expected to enhance the transportation network in the Chengdu-Chongqing area, providing great convenience for local residents [2] - The project plays a crucial role in supporting the development of the Chengdu-Chongqing economic circle and promoting the new pattern of western development [2]