Gotthard Base tunnel – GeoPrac.net

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A Herrenknecht TBM breaks through on the eastern tube of the Gotthard Base Tunnel on Oct. 15.

Gotthard Base Tunnel Achieves Milestone

October 25, 2010 rockman Comments Off

On October 15, a major milestone was reached on Europe and the World’s longest rail tunnel. The Gotthard Base tunnel under the Swiss Alps will form a high speed rail link between northern and southern […]

Surveyors working in the Gotthard Base Tunnel, longest tunnel in the world.

Building the world’s longest tunnel tests advanced surveying technologies

June 17, 2010 rockman Comments Off

The Gotthard Base Tunnel will eventually be a 35-mile rail tunnel through the famed Alps in southern Switzerland. So what does it take to survey the world’s longest tunnel? How about setting some 7,000 points […]