Friday, November 22, 2024 China’s advanced tunneling tech powers the Chongtai Yangtze River Tunnel, the world’s fastest underwater tunnel and a key link in the Shanghai-Chongqing-Chengdu Railway. China’s advanced intelligent shield tunneling technology has achieved a breakthrough with its application in the Chongtai Yangtze River Tunnel, a major component of the Shanghai-Chongqing-Chengdu High-Speed Railway project. Utilizing the Shield Tunnel Intelligent Construction V2.
0 system, itegrated with the cutting-edge “Pioneer” shield machine, the project has enhanced construction speed and quality after covering more than 2,000 meters of excavation. The Chongtai Yangtze River Tunnel, designed to accommodate speeds of 350 km/h, stands as the fastest underwater tunnel globally. Spanning 14.
25 kilometers, it features a shielded section stretching 13.20 kilometers. This landmark tunnel is managed by Shanghai-Hangzhou High-Speed Railway Passenger Transport Co.
, Ltd. and exclusively constructed by the China Railway Tunnel Group (CRTG). Its innovative single-hole double-track structure boasts a shield diameter of 15.
4 meters and an outer segment diameter of 14.8 meters, making it the largest high-speed rail shield tunnel in the world. Located beneath the deepest section of the Yangtze River, the tunnel withstands a maximum water pressure of 0.
9 MPa and links Chongming District in Shanghai to Taicang City in Jiangsu Province. With an unparalleled single-head excavation length of.
