Tung Chung Line Hong Kong
the project
The project involves a westward extension of the Tung Chung Line (TCL), and the design and construction of a new station at Tung Chung West and a tunnel from the existing Tung Chung Station in Hong Kong.
The main challenge of this project is the dense residential areas in the Tung Chung neighborhood. The launching shaft is located right in the middle of the Tung Chung Crescent residential estate.
Click the button below to find out more about the project on the MTR website:
Challenges
The Tung Chung Line Extension project is mainly composed of:
• Tung Chung East Section: Constructing an approximately 1.2km new railway section and diverting the tracks between Sunny Bay and Tung Chung stations, with the new Tung Chung East Station＃ to be built at the Tung Chung East reclamation area
• Tung Chung West Section: Constructing an approximately 1.3km westward extension from the existing railway tunnel of Tung Chung Station and building the new Tung Chung West Station＃ near Yat Tung Estate
Duration of project: May 2023 - 2029 (est.)
uby solution
Construction of the Tung Chung East station needs to be executed whilst the railway line stays in operation. Also the Tunnel Boring Machines will operate under existing buildings and structures and the MTR Corporation needs to ensure these projects do not impact any neighbouring facilities and buildings.
Measurements of surrounding structures
We use topographic prisms to measure deformations (in 3D), and façade clinometers to measure tilts on buildings within the site’s Zone of Geotechnical Influence.
We installed automatic total stations, vibration sensors and tiltmeters to obtain continuous measurements of all the prisms on the surface (buildings, MTR tracks) and in the station box, and TBM launching and retrieval shafts.
All measurements collected are available on our UBY platform. Our data visualization tool enables us to monitor the site environment in real time, and to keep a constant eye on any impacts. It also enables frequent, up-to-date reporting. An alert system is also available.
Benefits for the worksite
Data collected and real-time alerts are sent to the engineering team in case of any abnormal movement to any surveilled structures. This helps the geotechnical engineering team ensure the actual impact of the operation complies with calculations made beforehand and thus better steer the progress of the Tunnel Boring Machine.