Northern Section of the Wuhan Metro Line 12 PPP Project
Release time:
2025-12-24
Abstract
Construction unit: China Railway Tunnel Corporation
Device Number: (Jiangcheng Vanguard Shield Machine) China Railway Equipment
Cutting disc diameter: 12.56 meters
Tunneling length: 3,373 meters
Project Features:
Crossing Multiple High-Risk and Sensitive Areas: The northern section requires two crossings of the Yangtze River and one crossing of the Han River. The maximum burial depth of the tunnel roof beneath the riverbed reaches 51.7 meters below the bottom of the Yangtze River. Additionally, the tunnel must sequentially pass under the Wuhan Shipbuilding Vocational Technical College building, embankments, and the operating Line 1 light rail. This project not only has to address tool wear caused by the riverbed rock formations but also ensure the safety of surrounding buildings and existing railway lines. Geological conditions are complex and highly variable: the construction section spans various geological strata, including silty clay layers and intricate rock formations at the riverbed. In some sections, the maximum burial depth of tunnel boring machine (TBM) excavation reaches 41.2 meters. Particularly in areas directly beneath the Han River embankment, precise control of excavation pressure is essential to prevent ground collapse or water inflow risks. Outstanding Connectivity and Interchangeability: As a key component of the circular line, the northern section connects multiple administrative districts, including Qiaokou and Jianghan. Via Hankou Railway Station, it allows seamless transfers with more than ten metro lines. Moreover, the project includes the construction of the Danshui Pool Vehicle Depot and the Fuxingcun Parking Lot. Upon completion, this project will help Wuhan achieve a transportation network featuring “three districts integrated into a single loop.”
Year of commencement: November 2020
Year of completion: December 2024
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