The consortium consisting of Implenia, NGE, Itinera and Rizzani De Eccher started excavation work for the entrance to the Lyon-Turin Base Tunnel, construction site CO08 on the French side on 8 December. The preparatory work already proved to be extremely demanding: a total of 794 jet grouting columns were erected to improve the mechanical properties of the soil in the alluvial zone, as well as a "Paris wall" made of piles (1186) and nails (12,595). For the excavation of the "tympanum zone", 290,000 tonnes of material were excavated, a total of around 600,000 cubic meters for the entire project. Future-oriented construction site: Strict ecological, economic and social requirements applied to the construction of the consortium and the project management office. In addition, the consortium is currently constructing three acoustically effective buildings whose technical specifications reduce noise pollution and dust pollution for local residents. Work begins on the French side of the tunnel entrance: the ground-breaking ceremony, the first excavations and the installation of the first bracket began in the week following the blessing in honour of the patron saint, Saint Barbara – a symbolic and at the same time moving moment for all the miners working on the project. Of the two tunnel tubes with a total length of 5.678 km, more than 1,000 meters will be built in the form of an umbrella vault.
The consortium consisting of Implenia, NGE, Itinera and Rizzani De Eccher started excavation work for the entrance to the Lyon-Turin Base Tunnel, construction site CO08 on the French side on 8 December. The preparatory work already proved to be extremely demanding: a total of 794 jet grouting columns were erected to improve the mechanical properties of the soil in the alluvial zone, as well as a "Paris wall" made of piles (1186) and nails (12,595). For the excavation of the "tympanum zone", 290,000 tonnes of material were excavated, a total of around 600,000 cubic meters for the entire project. Future-oriented construction site: Strict ecological, economic and social requirements applied to the construction of the consortium and the project management office. In addition, the consortium is currently constructing three acoustically effective buildings whose technical specifications reduce noise pollution and dust pollution for local residents. Work begins on the French side of the tunnel entrance: the ground-breaking ceremony, the first excavations and the installation of the first bracket began in the week following the blessing in honour of the patron saint, Saint Barbara – a symbolic and at the same time moving moment for all the miners working on the project. Of the two tunnel tubes with a total length of 5.678 km, more than 1,000 meters will be built in the form of an umbrella vault.
