Gotthard Base Tunnel: Surveying the Drive, Laser Scanning and Track Position Control

This report deals with the surveying activities carried out for building the world’s longest rail tunnel (57 km), which constitutes part of the goods transport corridor from Rotterdam to Genoa. The Gotthard Base Tunnel runs from its north portal at Erstfeld through the Swiss Alps to the south portal at Bodio. With rock overburden of up to 2300 m the Gotthard Base Tunnel is also the deepest lying rail tunnel ever built.

Since building officially began in 1993 with the first exploratory tunnel in the geologically tricky Piora Zone, altogether 152 km of tunnels, shafts and headings have been excavated. Tunnel driving took place parallel in the five sections Erstfeld, Amsteg, Sedrun, Faido and Bodio. Excavating was completed on October 15, 2010 with the main breakthrough between Sedrun and Faido. Currently the inner lining is being finished off along with the installation of the rail technology. The tunnel is due to be opened in 2016.

An Overview of Surveying Tasks

The construction of the Gotthard Base Tunnel...

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