Tunnel boring machines have completed the drilling work for the high-speed rail project that will connect Oslo and Ski via twin 19.5km tunnels, the longest in Scandinavia. The two tunnel boring machines (TBMs) of the four that the ACCIONA-Ghella Joint Venture (AGJV) has used on this project, reached the Norwegian town of Ski, completing the TBM drilling work. The other two TBMs completed their work in September 2018.
The Follo Line Project will connect Oslo and Ski and allow trains to travel up to 250km/h.
Once full excavation work of the tunnels has been completed, AGJV will carry out the railway installation works, except for the signalling systems. The planning phase for these activities has already begun and the concreting works, the preparation of the tunnel walls and the catenary systems, and the walkways and the technical rooms will all be carried out in the coming months. The telecommunications systems, installation of the tracks and the power supply and ventilation systems also form part of this project.
The Follo Line Project is the largest transport project carried out in Norway to date, and is part of the wider inter-city development plan for south-east Oslo which seeks to improve and develop the country’s transport infrastructures.
It will be the Nordic region’s largest railway tunnel to date. When it is finished, no earlier than December 2022, it will halve the travel time between Oslo and Ski from 22 to 11 minutes.
Photo: Mette Stenberg, Bane Nor
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