China Railway 14th Bureau Group Corporation Limited, a subsidiary of China Railway Construction Corporation Limited (CRCC), has made progress in the excavation of the Yunchaojian River Tunnel of the Beijing-Tangshan intercity railway in North China.
An aerial view of the construction site of the Beijing-Tangshan intercity railway project [Photo/sasac.gov.cn]
With the largest diameter high-speed railway tunnel in Beijing, the tunnel was dug with the “Jingtong” tunnel boring machine (TBM).
The TBM is about 138 meters in length and has a diameter of 13.3 meters. It is about 3,200 metric tons in weight.
The machine started operation on Dec 28, 2023, and has moved forward 1,285 meters. It is expected to complete the excavation of the tunnel this June.
Workers of CRCC prepare for hoisting of the segment of the tunnel. [Photo/sasac.gov.cn]
Starting from the Beijing subcenter station, the Beijing-Tangshan intercity railway will stretch through Tongzhou District of Beijing, Langfang of North China’s Hebei Province, and Baodi District of Tianjin and will terminate at Tangshan of Hebei. The 148.7-kilometer line is scheduled to open for service by the end of 2025.
Workers of CRCC inspect the segment bolt linkage in the tunnel. [Photo/sasac.gov.cn]
(Executive editor: Zhu Zeya)
