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Abstract: In the southwest of the Netherlands the Sluiskiltunnel is currently under construction. It consists of two machine driven tunnel tubes with an outer diameter of 11 m. At the end of the alignment a 7 m high railway embankment is crossed with an overburden of 9 m. At this location the tunnel is excavated in soft clays and sands, with a peat layer of 50 cm in the tunnel face. Analyses are...