ACCIONA and its partners on the Follo Line project have been shortlisted (together with the client Bane NOR) for the “Tunnelling Project of the Year” award (in the category with a budget greater than $500 million) at the NCE Tunnelling Festival 2019.
These awards, which will be presented in London on 5 December, are given to the best tunnelling projects in different categories that have been recognised as the most outstanding projects of the year around the world, both in terms of their technical excellence and for other aspects such as innovation.
The ACCIONA Ghella Joint Venture (AGJV) team is extremely proud to be shortlisted, as the Follo Line project has shown that they are capable of successfully overcoming any technical challenge, such as the hard Norwegian rock on this particular project.
The Follo Line project, the largest to date carried out with tunnel boring machines (TBM) in Norway, consists of twin high-speed railway tunnels constructed between the city of Oslo and the town of Ski. Once completed, they will be Scandinavia’s longest railway tunnels with a length of 19.5 km.
To drill the tunnels, AGJV used a pioneering method in the country consisting of four double-shield tunnel boring machines (TBM) that started from a single point in the Norwegian town of Asland, which simultaneously drilled more than 36 km in less than two years, finishing ahead of schedule. Two of these tunnel boring machines drilled south towards the town of Ski, while the other two drilled north towards Oslo.
The material excavated by the TBMs was extracted from the tunnel on underground conveyor belts. As the TBM cutting heads excavated the tunnels, the rear sections of these machines installed the segmented lining rings, which were manufactured by reusing part of the nine million tonnes of rock that was excavated, contributing to the project’s sustainability.
The Follo Line contract was awarded to AGJV by Bane NOR, the state-owned company responsible for Norway’s railway infrastructure. The project is due to be completed by the end of 2022.
If you would like to know more about the NCE Tunnelling Festival 2019, follow this link: https://tunnelling.newcivilengineer.com/
For more information about the Follo Line project, click here: https://www.acciona-construccion.com/es/proyectos/ferrocarriles-y-tuneles/tuneles-ferroviarios-follo-line/