世界最大直径竖井掘进机启明号始发，投入崇太长江隧道建设

Core Viewpoint - The world's largest diameter vertical shaft tunneling machine, "Qiming," has been independently developed by China and has commenced operations in the construction of the No. 2 vertical shaft of the Chongqing-Taiwan Yangtze River Tunnel, marking a new era for the use of tunneling machines in high-speed railway vertical shafts in China [1] Group 1 - The "Qiming" machine is noted for its significant diameter, which is the largest in the world [1] - The machine began its operation on January 13 in Taicang City [1] - This project represents a pioneering step in the application of tunneling technology for high-speed rail infrastructure in China [1]