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Abstract: The main part of the tunnel in the Follo Line Project is constructed by means of tunnel boring machines (TBMs). Available noise modelling and measurements from various TBM tunnelling projects show a large scatter of results depending on geological conditions, TBM design and actual TBM boring diameter. Not much reference data from TBM excavation with similar boundary conditions is available, and...
Abstract: Preliminary noise studies for the Follo Line Project in Norway, consisting of two 20 km train tunnels, was based on a prediction model developed by processing measurement results from Norway, Sweden and Switzerland. As the tunnel boring machines (TBMs) for the Follo Line Project started out in an area with no dwellings in the immediate vicinity of the tunnels, this is an opportunity to modify...