Client
Amsterdam City Council, North/South Line Project Office
Location
Amsterdam
Construction period
2008–2013
Amsterdam North-South Line
Right beneath the historic heart of Amsterdam, one of Europe’s most complex metro projects was completed. The North–South Line is not only a transport route, but also a testament to exceptional craftsmanship underground.
Between 2008 and 2013, work was carried out on the construction of two single-track tunnel sections, each consisting of four sections, as part of the Amsterdam Metro North/South Line project. The tunnel tubes have a diameter of 7.12 metres and a total length of 6,200 metres. The client for the project was the North/South Line Project Office of the Municipality of Amsterdam.
Various specialised techniques were employed to ensure the accurate and safe construction of the tunnels beneath the city. For example, stabilisation grouting and compensation grouting were carried out to compensate for settlement during the works. These methods ensured that the subsoil was sufficiently stabilised during the drilling and construction phases.
In addition, the project involved the construction of cross-cuts, using ground freezing as a protective measure. This technique made it possible to temporarily stabilise the subsoil, so that the cross-connections could be safely constructed.
Escape shafts were also constructed, either using bored pile walls or as caissons, depending on the location within the project area.
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