走近大国工程丨“蛟龙”穿江探访在建的世界最长公路水下盾构隧道

Core Viewpoint - The article highlights the significant advancements in China's transportation infrastructure, particularly focusing on the construction of the Hai-Tai Yangtze River Tunnel, which utilizes domestically developed ultra-large diameter shield machines to enhance connectivity and efficiency in the region [4][6][17]. Group 1: Project Overview - The Hai-Tai Yangtze River Tunnel is a key project under the "14th Five-Year Plan," aiming to connect the cities of Nantong and Suzhou, significantly reducing travel time across the Yangtze River from over an hour to just 10 minutes [6][7]. - The tunnel will be the world's longest underwater shield tunnel, with a total length of 11.185 kilometers and a shield section of 9.315 kilometers [8]. Group 2: Technological Innovations - The project employs two ultra-large diameter shield machines, "Jiang Hai" and "Cang Yuan," each with a diameter exceeding 16.6 meters, specifically designed to meet the project's unique challenges [7][8]. - The "Jiang Hai" shield machine features a main bearing with a diameter of 8.6 meters, the largest of its kind in the world, ensuring efficient and safe tunneling operations [9]. Group 3: Safety and Efficiency Measures - The "Jiang Hai" machine incorporates advanced technologies such as a constant pressure tool replacement system, allowing for safe and efficient maintenance during long-distance tunneling [10]. - Real-time data monitoring and analysis are facilitated through a digital platform, enhancing operational safety and efficiency by allowing for immediate adjustments based on geological conditions [11][12]. Group 4: Environmental Considerations - The project adopts a clean energy supply system integrating wind, solar, and storage, expected to generate approximately 24 million kilowatt-hours annually, significantly reducing carbon emissions compared to traditional power sources [14][15]. - The construction process emphasizes recycling and waste management, with measures in place to treat and reuse wastewater and repurpose excavated materials [15][16]. Group 5: Strategic Importance - The Hai-Tai Yangtze River Tunnel is positioned as a critical infrastructure project that aligns with China's broader transportation strategy, enhancing regional connectivity and supporting economic development [4][17]. - The project exemplifies China's commitment to sustainable development, aiming to create a "zero-carbon tunnel" throughout its lifecycle [14][16].