It is a key work. The burying of the R2 of Rodalies on its way through Vallbona will mean the sewing of a historical wound that separates the district of Vallbona from the rest of the city and will unite the last agricultural district of the city.
And although there are still five years to go, the company responsible for the construction, Rover Grupo, has published the first projections on the appearance of the box that will cover the tracks and on which it remains to know what will be done.
700 meters of concrete box
The data of the work, commissioned by Adif, are impressive:720 meters of underground track, 18,0000 tons of steel, more than 100,000 square meters of poured concrete and 50,000 square meters of rock screens with the hydro-mill, that is,
These 720 meters will be included in the improvement of 1,520 meters of conventional track, which will be executed using the “cut and cover” method, as explained by the company. This method implies that, instead of boring a tunnel with a tunnel boring machine, a trench is opened to build the tunnel inside the trench and then cover it.
For the construction of the caisson screens, a hydro-milling machine will be used to excavate in rock, reaching depths of between 22 and 35 meters.