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  The largest tunnel in freshly consolidated soft soil: Tuen Mun Chek Lap Kok Link tunnel project, Hong-Kong

  The Northern Landfall, part of the Tuen Mun Chek Lap Kok Link tunnel project, is a large reclamation on very soft Marine Deposits and Alluvium, inside which two large-diameter tunnels are to be bored. The realization of this challenging, world-record-holding project implies the use of consolidation under surcharge, to give the compressible soils enough strength to withstand the excavation of the tunnels and ensure its durability. This paper describes the design and monitoring of this consolidation scheme, and outlines its close relationship with the design of the tunnel linings.

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