世界最大直径高铁盾构机——崇太长江隧道“领航号”掘进突破万米大关

Core Insights - The "Linghao" shield machine has achieved a significant milestone by surpassing 10,000 meters in excavation, marking a major progress in the construction of the Chongtai Yangtze River Tunnel, which is crucial for the North Jiangsu High-Speed Railway project [1][6] 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 shield section of 13.2 kilometers designed for dual-track operation [3] - The tunnel features several world records, including the longest single-shield excavation length of 11.3255 kilometers, the highest design speed of 350 kilometers per hour for an underwater tunnel, and a depth of 89 meters below the Yangtze River, making it the deepest underwater tunnel in the river [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, the largest in the world, and incorporates the advanced I-TBM system for intelligent excavation [3] - This system enables autonomous decision-making and intelligent analysis, achieving a record monthly excavation rate of 718 meters for high-speed rail tunnels [3][6] Group 3: Strategic Importance - The completion of the Chongtai Yangtze River Tunnel will create a fast new 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 [8] - The project is a key component of the national "Eight Vertical and Eight Horizontal" high-speed railway network, facilitating major passenger flow along the coastal and Beijing-Shanghai corridors [8]