启程深地 明耀征程 世界最大直径竖井掘进机“启明号”顺利完成掘进任务

Core Viewpoint - The successful completion of the "Qiming" vertical shaft tunneling machine's excavation task marks a significant breakthrough in China's mechanized and intelligent construction of large-diameter, ultra-deep vertical shafts, enhancing the efficiency and quality of construction in the field of tunnel and underground engineering [6]. Group 1: Technical Achievements - The "Qiming" tunneling machine has a maximum excavation diameter of 24 meters and can reach a maximum depth of 75 meters, capable of withstanding water pressure of 8 bar [4]. - It integrates multiple systems including main drive, leg support, and dual-arm cutting, enabling autonomous sinking, guidance, and control capabilities [4]. - The machine achieved a maximum daily excavation rate of 4 meters and an average of 2.7 meters, significantly improving construction efficiency [4]. Group 2: Project Significance - The Chongtai Yangtze River Tunnel, with a total length of 14.25 kilometers and three vertical shafts, is a key project in the national "Two Heavy Projects" high-speed rail network [5]. - The successful construction of the second vertical shaft is crucial for the reception and secondary launch of the "Linghang" shield machine, ensuring the project's progress [5][6]. - The tunnel will enhance the transportation network in the Yangtze River Delta region and promote high-quality integrated development, allowing high-speed trains to cross the river without reducing speed for the first time [6].