Line 17 - On Monday 14th November at 5 pm the TBM Dorine - 120 m long and weighing over 1,000 t – brokethrough at Line 17’s Rolland manufact in Le Bourget at a depth of 26 m, completing the excavation of the 1.2 km tunnel which it started in April 2022.
Last year TBM Dorine completed the 1.1km first Verdun - Rolland section for Line 17. The machine in both sections passed through the future Le Bourget RER station located at the intersection of lines 16 and 17.
The Verdun and Rolland structures - built on either side of Le Bourget RER station - connect the tunnels of lines 16 and 17 of the new Grand Paris Express. They also incorporate one or more switches allowing trains to change tracks to take different routes; they will allow the evacuation of passengers for emergency and the ventilation of the lines 16 and 17 tunnels.
Line 18 - Also on Monday 14/11/2022, the TBM Celine broke through the future Massy - Palaiseau station on Line 18. The TBM, launched last year by Camille Claudel in Palaiseau - excavated 2.5 km of the West tunnel in all the TBM will excavate a total of 6 km for Line 18.
For further information please click here and fr/127 for the tunnelbuilder archive. Visit https://www.societedugrandparis.fr/. 48/22.
