Switzerland

Gotthard Base Tunnel: TBM restarts in Faido west tunnel

On 4 March 2010 excavation had to be stopped in the west tunnel of the Gotthard Base Tunnel some 9 km from the Faido multifunction station due to a rock inrush, and exploratory bores had to be performed to determine the length of the fault zone. To allow the tunnel boring machine (TBM) to be restarted, the loose material in front of and above the cutterhead of the TBM was solidified with cement through an injection niche from the parallel east tunnel. At the same time, also from the east tunnel, a further tunnel was excavated to the west tunnel and then driven backwards so that on July 22,...

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Issue 2010-04 Switzerland

Gotthard Axis – Situation in March 2010

The CEO of the AlpTransit Gotthard AG Renzo Simoni reported on progress achieved in building Switzerland’s biggest construction project during the premiere of the 2009 AlpTransit annual film on March...

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Issue 2011-03 Switzerland

Gotthard Base Tunnel: Drive concluded

On March 23, 2011 at 20 past 12 noon the tunnel boring machine broke through from the Faido western bore into the Sedrun part-section (title page); in this connection the deviations from the intended...

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Issue 2010-04

Gotthard Base Tunnel: Stage reached by Work

The roughwork execution and the concreting operations for the inner lining also progressed parallel to the drive at all construction sites. At the end of 2009, 85 from 176 cross-passages had been...

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Issue 2011-04 Producing the Structure of the Century

Gotthard Base Tunnel – the World`s longest Tunnel

Commissioned by: AlpTransit Gotthard AG, Lucerne 2010: 268 pp (23.5 x 30 cm) with 280 Ills. /Tab.; ISBN 978-3-7272-1211-6. Bound. CHF 59.90. Stämpfi Verlag AG, Berne. The Italian version is due out...

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Issue 2011-01 Switzerland

Swiss Tunnel Congress 2010

Specialist Conference for Underground Construction – Colloquium: Concrete Technol­ogy Colloquium on June 9, and specialist conference on June 10, 2010, in Lucerne, Switzer­land. Publisher: FGU...

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