Core Viewpoint - The successful completion of the Jinan Huanggang Road Yellow River Tunnel marks a significant milestone in underwater tunnel construction in China, utilizing the world's largest diameter underwater shield tunneling machine, "Shanhe" [1][5][16]. Group 1: Project Overview - The Jinan Huanggang Road Yellow River Tunnel is approximately 5.75 kilometers long, with the shield section measuring about 3.3 kilometers, designed for a speed of 60 kilometers per hour, and features a single-hole double-layer tunnel layout, making it the first of its kind in China to cross the Yellow River [5][16]. - The shield machine, "Shanhe," has a diameter of 17.5 meters and is designed to navigate complex geological conditions, including a maximum soil cover of 49.2 meters and a maximum water-soil pressure of 6.3 bar [5][8]. Group 2: Technical Innovations - The project team developed a unique "flocculation + concentration + pressure filtration" system, improving mud treatment efficiency by 50% and reducing the moisture content of the filter cake to below 30% [15]. - Advanced technologies such as diamond tools, rock crushers, and dual-pipeline hydraulic rock drilling devices were employed to address challenges posed by calcareous nodules, achieving continuous tunneling for 3.3 kilometers without changing tools [15][16]. Group 3: Construction Achievements - The project has overcome 28 technical challenges, achieving a maximum daily advance rate of 18 meters and a monthly advance rate of 426 meters, setting a world record for 17-meter diameter shield construction [16]. - The construction process has resulted in over 30 scientific papers and 22 patent applications, establishing a complete technical system for 17-meter shield construction, enhancing China's capabilities in large-diameter shield tunneling [16]. Group 4: Economic and Strategic Impact - The completion of the tunnel will enhance economic exchanges and cooperation between the north and south banks of the Yellow River, significantly contributing to the development of Jinan and supporting national strategies related to the Yellow River [16].
“山河号”盾构机出洞! 世界最大直径水下盾构隧道在济南贯通
Qi Lu Wan Bao·2025-08-17 02:12