世界最长海底高铁隧道建设施工稳步推进

Core Insights - The article highlights the ongoing construction of the Ningbo-Zhoushan Railway's underwater tunnel, which is the longest underwater high-speed railway tunnel in the world, measuring 16.18 kilometers [3]. Group 1: Project Overview - The tunnel construction is being executed by China Railway 14th Bureau, with significant progress reported as the "Yongzhou" shield machine has excavated over 3,146 meters, completing more than 60% of the total task on the Ningbo side [3]. - The project team has ensured continuous operation during the Spring Festival, with over 150 construction workers remaining on-site to maintain 24-hour shifts for excavation and monitoring [3]. Group 2: Technical Details - The construction involves precise positioning of the shield machine underwater, with comprehensive inspections and maintenance being conducted to ensure operational efficiency [3].