The project was complex, in part because the island was uninhabited but also because it almost entirely consists of soft muddy flats. Construction of the port on this soft ground, combined with very challenging settlement criteria, required a highly innovative solution.
The contract to construct a quay wall, a small harbour and land reclamation was awarded to our client, Hyundai, with Royal HaskoningDHV carrying out detailed design for phases one and two, as well as hydrodynamic modelling for all phases of the project.
Our design combined a tied combi-wall with a deep soil mixing technique to improve the weak, silty clay. The band drain and surcharge method was adopted for reclamation, driving out some 2 metres of settlement during construction.
In addition to the port design, we delivered a variety of services that drew on our environmental expertise, port design, maritime and geotechnical knowledge. Phase One was completed in 2014 with further components for the container terminal design, infrastructure and design of approach channel and berth pocket yet to be completed.