全长4373米 西渝高铁城口隧道顺利贯通

Core Viewpoint - The successful completion of the Chengkou Tunnel, a key project of the Xiyu High-Speed Railway, marks a significant milestone in the construction of the railway, laying a solid foundation for its timely operation [1][3]. Group 1: Project Details - The Chengkou Tunnel is a single-bore double-track tunnel located in Chengkou County, Chongqing, with a total length of 4,373 meters [3]. - The tunnel's geological conditions are extremely complex, facing challenges such as landslides, rock bursts, fault crossings, and surrounding rock deformation, which contribute to high construction difficulty and safety risks [3]. Group 2: Construction Efforts - The project team has focused on overcoming key challenges by adhering to design specifications, addressing geological issues, and implementing technological innovations while maintaining strict safety and quality controls [3]. Group 3: Strategic Importance - The Xiyu High-Speed Railway is a crucial part of China's "Eight Vertical and Eight Horizontal" high-speed rail network, specifically the Beijing-Kunming corridor and the Baotou-Yinchuan to Haikou corridor [3]. - Once completed, the railway will connect with several existing high-speed rail lines, enhancing the transportation network in the central and western regions of China, supporting the Chengdu-Chongqing economic circle, facilitating travel for local residents, and promoting high-quality economic and social development along the route [3].