Fourniture et mise en oeuvre boulons fibre de verre, excavation et soutènement de la galerie Technicentre de la gare de Chatillon-Montrouge (CHM).
Client: Société du Grand Paris
Contractor: Vinci Costruction France
Place: Communes de Bagneux, Châtillon et Montrouge France
Period: July 2020 - October 2020
Excavation of a tunnel and primary lining with steel ribs, sheet piles, electrowelded mesh and shotcrete, in a very delicate geological and logistic context. The opening was smaller than the tunnel section due to the interference with the top and the bottom slab, so the excavation has been made with a progressive enlargement in the first three steel ribs along the curve. Once the excavation arrived at the opposite opening, the initial opening was enlarged from the tunnel.