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The Hong Kong Tuen Mun-Chap Lap Kok subsea tunnels: challenges, innovations, and lessons learned

Event organised by The British Tunnelling Society

08 February 2024

This event has now ended

You can catch-up on details or any broadcast and downloads here.


The Tuen Mun-Chap Lap Kok (TMCLK) project was the winner of the Major Project of the Year in the over €500M category of the International Tunnelling and Underground Space Association (ITA) in 2019. The completed project provides an alternative access route to the Hong Kong International Airport located on Chek Lap Kok Island, which was only been accessible via the Tsing Ma Bridge. The project encompasses the design and construction of remarkable 4.5km twin-tube subsea tunnels, 57 cross passages, and a 500m cut and cover section. The TMCLK project was opened for public use in December 2020. 

The project’s challenges included cutting tools replacement at hyperbaric pressure up to 5.8 bar, shafts and tunnelling in newly reclaimed land, 17.6m diameter TBM tunnelling, a bespoke mini TBM for 41 subsea cross passages and more. The valuable experiences gained during this project have significantly contributed to innovations in the tunnel tunnelling industry, paving the way for future projects. Bouygues Travaux Publics and Dragages HK Limited, both subsidiaries of Bouygues Construction, collaborated as a joint venture to design and execute the project over 7 years. 

This very informative talk will discuss the significant work undertaken on this major project. It will outline the technical challenges encountered, the solutions implemented, and the lessons learned that can be applied to future projects.

The lecture will be followed by food and drinks in Kendal's Café sponsored by Bouygues-Murphy Joint Venture.

Please note:

  • Registration is not required to attend the event in-person
  • Join online via the 'watch broadcast online' button at the scheduled time.
Sponsored by:

Bouygues Travaux Publics

Bouygues Travaux Publics

Bouygues Construction is a global player in construction, with operations in 60 countries. It designs, builds and operates projects in the sectors of building, infrastructure and industry.



Murphy is a leading global, multi-disciplined engineering and construction company founded in 1951 that improves lives by delivering world-class infrastructure.

Organised by

The British Tunnelling Society

The British Tunnelling Society

The BTS is a vibrant group of tunnelling professionals which spreads knowledge amongst members and the tunnelling industry.


17:30 - 18:00

Tea and coffee

18:00 - 19:20

Lecture in the Telford Theatre

19:20 - 21:30

Food and drink sponsored by Bouygues Murphy Joint Venture


Antoine Schwob

Antoine Schwob

Bouygues Travaux Publics

Project Director

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Antoine Schwob

Antoine has worked for Bouygues TP or their subsidiary Dragages (in Hong Kong) since 2005. He was a methods engineer and design manager on projects such as East Tsing Yi Viaduct, the Chenobyl New Safe Confinement project and the Trinidad rapid rail project, as well as working as a senior design engineer in the design head office of Bouygues on Tunnel Projects such as the New Tyne Crossing and the Liefkenshoek Railway project.

In Hong Kong he was the technical manager throughout the duration of the Tuen Mun- Chek Lap Kok Link Project then the deputy project director on the Trunk Rd T2 Project. Most recently he has been the deputy project director for the Bouygues Murphy Joint Venture on the Lower Thames Crossing throughout the successful bid and now the development stage.

For more information please contact:

Shelly-Ann Russell

Sustainable Development Goals: