East extension of Paris metro line 11 – lot GC01
Project
Construction of the tunnel and 4 metro stations for the eastern extension of the Paris metro line 11 between La Dhuys and Serge Gainsbourg stations.
NGE used a tunnel boring machine « Sofia » for this 3km circular tunnel, 9m in diameter.
The project includes the construction of 4 underground stations with dimensions: 100 m x 20 m and 25 to 30 m in depth.
Construction of 3 ventilation structures and fire-access vents made as reinforced wells.
The key figures
of the project
3
km of tunnel drilled with TBM
km of tunnel drilled with TBM
4
underground stations
underground stations
72 000
m3 of concrete
m3 of concrete