Tunnels and underground spaces
INEXIA has inherited skills acquired in major urban RER projects, such as Eole, inter-urban projects such as the different high speed lines or in crossing mountain ranges. Its specialised teams works on these projects from the upstream studies to work monitoring.
In this domain which is characterized by the absolute demand for safety and quality, our engineers design, calculate and dimension all types of underground engineering works: tunnels (rail or road), underground stations, etc.
Their know-how applies in particular to:
- Investigation by defining, monitoring and interpreting geological and geotechnical reconnaissance campaigns,
- Expertise with safety studies, risk analysis, structural modelling and aerodynamic studies,
- The design and dimensioning by defining production methods in the ground, in rocks, under aquifers and in mountainous environments, as well as in urban sites, in mechanized or conventional modes,
- Ventilation and structure fire resistance study,
- Acoustics applied to the land (wave transmission in a closed environment).
"INEXIA is involved in three major tunnel projects: drilling a safety gallery in the Fréjus tunnel (13 km long under over 2000 meters of cover between France and Italy) on behalf of the SFTRF and the SITAF, the design of the Chat road tunnel gallery and the design of the Eastern section of the PACA HSL, with over 50km of tunnels." Francesco Chille, Tunnel and Underground area Study Engineer.
