ABSTRACT
The Line 16 Section 1 is the biggest section of the Grand Paris Express project. It involves the construction of 19 km of news tunnels and five stations over a period of 6 years. The most complicated and important station to be built, named Saint Denis Pleyel, will serve the line 14, 15, 16, 17, 18 and RER D. It is locate next to the busiest rail junction point in Europe, which is composed, of 43 tracks used for high-speed trains, regional trains, overground metro, commercial trains and parking. The TBM-2B, focus of this study, mined under this rail junction at a depth of 22.5 meters without any interruption allowed and limited settlement. A 16 meters long steel structure was installed inside the station in front of the diaphragm wall to allow the TBM to enter the station without any water infiltration.
