Risk Management of Groundwater during the Rebuilding of the Rotterdam Central Area

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The rather complex subsoil and groundwater conditions have played an important role in the design and execution of projects with extensive excavations in the centre of Rotterdam. These projects comprise of the reconstruction of a subway station, two new traffic tunnels, an underground bicycle parking facility and a new railway terminal. The realisation of these projects involve a number of risks. This paper describes the main hydrological risks during the realisation of the different projects around the railway station Rotterdam Centraal. Three risks are presented in more detail, illustrating that knowledge of the local groundwater regime is a precondition for realising projects with controlled risks.