世界最大直径水下盾构隧道车道板施工突破3000米！

Core Viewpoint - The construction of the Jinan Huanggang Road Yellow River Tunnel has successfully reached a significant milestone, with over 3000 meters of the upper deck structure completed, marking the transition into a critical phase for the tunnel's internal structure construction, which is essential for its timely opening [1][3] Group 1: Project Overview - The Jinan Huanggang Road Yellow River Tunnel is the first single-hole double-layer shield tunnel in China, featuring a dual-layer tunnel layout [3] - The upper deck consists of six lanes, with a total length of 3290 meters and a cross-span of 13 meters, designed to support both vehicle loads and auxiliary facilities [3] Group 2: Construction Techniques - The total volume of concrete used for the upper deck is over 30,000 cubic meters, indicating the complexity and scale of the project [3] - The project team has implemented innovative solutions, including 12 hydraulic walking formwork vehicles and modular design, to enhance efficiency and reduce construction time by over 30% compared to traditional methods [5] Group 3: Quality and Safety Management - A strict three-inspection system is in place to ensure quality control at every stage of construction, with detailed records maintained for materials and processes [5] - Safety management measures include dividing the hydraulic vehicles into three operational zones, assigning responsibilities, and conducting thorough inspections of critical systems to ensure comprehensive safety oversight [6] Group 4: Impact and Significance - Once completed, the tunnel is expected to reduce commuting time between the two banks from 40 minutes to just 4 minutes, significantly enhancing Jinan's urban connectivity and supporting national strategic initiatives [6]