Our areas of business

The ENGIE Axima Tunnels department was created in 1997. Today, it has a team of over 40 specialists who can oversee an installation from end to end, with full expertise in each phase:

Design and engineering

Extensive knowledge in dimensioning:

  • Calculation of fresh air needs, smoke exhaust flow rates, acoustic and vibrational treatments.
  • 1D / 3D digital modeling for air management and mechanical performance, etc.


  • Monitoring of production to meet the quality requirements.
  • Reliable partner supplier offering the best fit for projects.


  • Specialist workers accustomed to the conditions of underground structural work.


  • From commissioning to performance tests: a key step completed by our engineers and technicians accustomed to underground structures.


Our local branch offices are your daily touchpoints for:

  • A 24/7 hotline
  • Simple diagnostics with full guarantees.

Areas of activity

  • Road tunnel ventilation
  • Rail tunnel ventilation
  • Parking lot ventilation
  • Underground transport ventilation (stations and tunnels)
  • Tramway and tram-train underground sections ventilation
  • Ventilation during excavation
  • Fire tests, etc.


  • A 500 – Monaco tunnel
  • El Azhar road tunnels in Cairo (Egypt)
  • St-Quentin-en-Yvelines underground railway station (France)
  • Maurice Lemaire - A 86 highway West – East tunnel (France)
  • Algiers underground transport system (Algeria)
  • Toulouse metro system, lines A and B
  • New Tyne Crossing (UK)
  • Aiguebelle and Hurtieres tunnels (France)
  • Lioran tunnel (France)
  • Mont Sion tunnel (France)
  • Epine North and South tunnels - renovation (France)
  • Somport tunnel (France)
  • Toulon tunnel (France) etc.




Tunnels Department Manager

Tel: +33(0)4 78 41 21 59