The largest single-shield Tunnel Boring Machine (TBM) in southwest China, named “Fuhe”, has successfully rolled off the production line in Deyang, Sichuan Province. The machine was developed by China Railway Engineering Co., Ltd.
The largest single-shield Tunnel Boring Machine in southwest China, named “Fuhe”, has successfully rolled off the production line in Deyang, Sichuan Province. [Photo/sasac.gov.cn]
The TBM is set to be deployed in the excavation of the No. 6 auxiliary tunnel of the Xianglushan Tunnel, Dali Section I of the water diversion project in the central part of Yunnan Province.
With a boring diameter of 10.23 meters and a total length of approximately 190 meters, the TBM consists of a main machine, a service bridge, and ten trailing support units. The entire system weighs 2,500 tons and is designed to excavate a total length of 15.51 kilometers.
Tailored for the complex geological conditions of the tunnel, the TBM integrates several advanced technologies, which will enhance the machine’s ability to overcome challenges such as soft rock deformation and high-pressure, water-rich sections. The machine also features an advanced digital drilling rig and an anchor cable drilling system that together enable integrated geological forecasting, tunnel face reinforcement, and vault support, ensuring safety for long-distance tunneling on steep gradients.
The water diversion project in the central part of Yunnan Province is one of the 172 major water-saving and supply projects designated by the State Council. It plays a vital role in alleviating water scarcity in central Yunnan and ensuring the region’s sustainable development. The project spans a total of 664 kilometers, with over 92 percent consisting of tunnels. Upon completion, it is expected to divert an average of 3.4 billion cubic meters of water annually, benefiting over 11 million people in cities such as Kunming and Yuxi.
(Executive editor: Wang Ruoting)
