UDK02 Drammen-Kobbervikdalen project: it can be divided in 4 parts

The UDK02 project in which Trevi Spa is involved, which consists in the progressive underground construction of the new Drammen-Kobbervikdalen high-speed line, can be divided into 4 macro-areas that follow one another from the surface to the fully-underground tunnel.

The first part consists in a cut and cover with metal sheet piling, followed by the second part, a Contiguouos Piles Wall with 1200 mm diameter Piles, made by Trevi. The space between the piles was sealed by monofluid jet grouting columns.

Trevi also executed the bottom plug between sheet piles and piles by means of bifluid jet grouting columns.