Germany

Lahntalbahn: Renewal of Two Tunnels

On the twin-track Lahntal route the 319 m long Hollrich Tunnel and the 232 m long Langenau Tunnel between Nassau and Obernhof were built in 1860 and are located some 1,000 m apart. After more than 150 years age has taken its toll so that renovation is essential.

In order to ensure that these tunnels comply with modern requirements their clear cross-section also had to be enlarged; the cross-section has to be widened by some 2 m and a new inner shell made of concrete installed. Towards this end a tunnel enlargement machine (TEM) – 30/8/8 m, Type TEM 8400 from GTA – was constructed, beneath...

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Issue 2018-03

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1 Introduction The Maroggia Tunnel belonging to the Swiss Federal Railways (SBB) is located in the Canton of Ticino on the route between Bellinzona and Chiasso. The twin-track rail tunnel has been...

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Issue 2013-03 Anchoring

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Issue 2011-06 Gotthard Base Tunnel

Fully-hydraulic Forming for complex Tunnel Cross-Section

In the Gotthard Base Tunnel’s Erstfeld section a fully hydraulic and flexibly adjustable tunnel forming carriage served to execute the inner shell for 2 branching structures, which tapered greatly in...

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Issue 2011-07 Germany

Breakthrough at Bleßberg Tunnel

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Issue 2011-04 Austria

Arlberg Tunnel again 2-Track

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