Ulriken Tunnel –The first TBM Drive for a Railway Tunnel in Norway

The 7.8 km long second tube of the Ulriken Tunnel represents a milestone in Norwegian tunnelling; for the first time a tunnel boring machine (TBM) is used to drive a railway tunnel. With a diameter of 9.3 m, the selected gripper TBM also has the largest diameter ever bored in Norway. After a general description of the project, the paper1 describes selected aspects of the TBM project.

1 Introduction

The Ulriken Tunnel is part of the “Bergensbanen”, the railway line between Oslo and Bergen in Norway (Fig. 1). The existing tunnel, which was opened in 1964, is 7.7 km long and is situated between the stations at Årna and Bergen (Fig. 2). Due to the very high load factor of passenger traffic (120 trains a day) and goods traffic (14 trains a day) on the single-track line, and also in order to improve safety, the Norwegian Transport Ministry decided in 2009 to upgrade the line to two tracks including the construction of a second tube for the Ulriken Tunnel.

The excavation of the 7.8...

Related articles:

Issue 2010-03 Austria

Breakthrough at Pfänder Tunnel

A second bore for the 6.6 km long Pfänder Tunnel was driven with a tunnelling machine (S-494, Herrenknecht AG) with 11.85 m cutterhead diameter. The support was provided with 25 cm thick and 2 m...

more
Issue 2018-02 Norway

Both Tubes of the Solbakk Tunnel broken through

After excavating for more than four years, the first tube of the 7980 m long Solbakk Tunnel, currently the world`s longest subsea tunnel, was broken though at the end of 2017. The tunnel belongs to...

more
Issue 2019-02 Norway | Norwegen

Final double Breakthrough Follo Line

The final double breakthrough of the two Herrenknecht tunnel boring machines „Anna“ and „Magda“ (Double Shield TBM, Ø 9,900 mm) in the Norwegian Ski completed the excavation of both...

more
Norway

Final double Breakthrough at the Follo Line

The final double breakthrough of the two Herrenknecht tunnel boring machines "Anna" and "Magda" (Double Shield TBM, Ø 9,900 mm) in the Norwegian Ski completed the excavation of both 20-kilometer-long...

more
Issue 2011-03 The Netherlands/Germany

Wayss & Freytag was awarded to build Sluiskil Tunnel

In mid November 2010 Wayss & Freytag Ingenieurbau AG, Tunnelling Division, a member of the BAM TBI Joint Venture, was awarded the 208 Mio. Euro contract for the construction of the Sluiskil Tunnel...

more