世界最大直径高铁盾构机“领航号”在长江入海口掘进突破万米

Core Insights - The "Linghao" shield machine has successfully completed over 10,000 meters of tunneling, marking a significant milestone in the construction of the Chongtai Yangtze River Tunnel, which is a key project for the Shanghai-Nanjing-Hefei high-speed railway [1][4] Group 1: Project Overview - The Chongtai Yangtze River Tunnel connects Chongming District in Shanghai and Taicang City in Jiangsu Province, with a total length of 14.25 kilometers, including a 13.2-kilometer shield section designed for dual tracks [3] - The tunnel features several world records, including the longest single-shield tunneling distance of 11.3255 kilometers, the highest design speed of 350 kilometers per hour for an underwater tunnel, and the deepest riverbed tunnel in the Yangtze River at 89 meters [3] Group 2: Technological Advancements - The "Linghao" shield machine, measuring 148 meters in length and weighing approximately 4,000 tons, is equipped with a 15.4-meter diameter cutter head and the advanced I-TBM system, which allows for intelligent and autonomous tunneling operations [3][4] - The project employs a technical guidance mechanism established by Shanghai National Railway Construction Management Company and China Railway Tunnel Group, which includes expert consultations and academic discussions to address construction challenges [3] Group 3: Strategic Importance - The Shanghai-Nanjing-Hefei high-speed railway is a crucial segment of the eastern route of the Huyu Rong high-speed railway and an important part of the national "Eight Vertical and Eight Horizontal" high-speed railway network [4] - Upon completion, the project will create a rapid transit corridor between the Shanghai, Nanjing, and Hefei metropolitan areas, enhancing the railway network layout along the Yangtze River and supporting the high-quality development of the Yangtze River Economic Belt and the integration of the Yangtze River Delta [4]