世界最大直径水下盾构隧道贯通

Core Viewpoint - The successful breakthrough of the "Shanhe" shield machine at the Huanghe Tunnel in Jinan marks a significant milestone as it is the world's largest underwater shield tunnel with a diameter of 17.5 meters [1] Group 1: Project Details - The Huanghe Tunnel project is invested and constructed by Jinan Urban Construction Group, with China Railway 14th Bureau Group as the contractor [1] - The completion of this tunnel is considered a milestone in engineering, as stated by Qian Qihu, a recipient of the National Supreme Science and Technology Award and an academician of the Chinese Academy of Engineering [1]