Client: Jiangsu Provincial Railway Office

Location: Nanjing, Jiangsu Province

Scale: 13 km

Work Period: Jan 2018 – Present

Service to Client: Project Management / Structural, Geotechnical, Civil, MEP and System Design

Spanning 18 kilometers with a 13-kilometer tunnel constructed by tunnel boring machine (TBM), this critical segment of the Nanjing-Huai’an Railway initiates at the new Nanjing North Station. It traverses southeast beneath the Yangtze River through the planned Shangyuanmen Passage, ultimately interfacing with the existing Nanjing Station infrastructure.

     Strategically interconnecting the Shanghai-Nanjing Intercity Railway, Shanghai-Chongqing-Chengdu High-Speed Rail, and Nanjing-Xuancheng/Ningbo-Chuzhou-Bengbu Railways, the corridor bridges the Huai’an economic hub with the Yangtze urban belt. It directly links the Nanjing Metropolitan Circle to the Suzhou-Wuxi-Changzhou Economic Zone while strengthening transportation integration between northern and southern Jiangsu provinces.

     The engineering solution employs a 13.2-meter-diameter TBM for large-section tunneling and navigates extreme construction complexity due to parallel tunnel proximity. With a total tunnel length of 18 kilometers, this underground passage ranks among China’s most technically demanding urban rail projects.