世界最大直径高铁盾构机掘进突破万米大关

Core Insights - The "Linghao" shield machine has achieved a significant milestone by surpassing 10,000 meters in excavation, with only 1,000 meters remaining to reach the southern bank of the Yangtze River, marking a major progress in the world-class cross-river tunnel project [1] Group 1: Project Overview - The Chongtai Yangtze River Tunnel is a key project for the high-speed rail connecting Shanghai, Nanjing, and Hefei, with a total length of 14.25 kilometers, including a shield section of 13.2 kilometers designed for dual-track operation [1] - The tunnel will allow high-speed trains to cross the Yangtze River without reducing speed, showcasing advanced engineering capabilities [1] Group 2: Technical Achievements - The tunnel features several world records, including the longest single-shield excavation length of 11.3255 kilometers, the highest operational speed of 350 kilometers per hour for an underwater tunnel, and the deepest underwater tunnel at 89 meters below the Yangtze River [1] - 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 globally, and incorporates the advanced I-TBM system for intelligent excavation [2] Group 3: Industry Impact - The achievement of over 10,000 meters of continuous excavation by a 15-meter diameter shield machine represents a historic leap for China, transitioning from a position of "catching up" to "leading" in this field [2]