Seawall Construction:
The works include dredging and rockfilling for construction of over 10km sloping seawalls.
A special method – underwater explosive compaction was used to eliminate the water pollution and to decrease the quantity of dredging and disposal of marine mud.
Reclamation and Ground Treatment:
By using sand tube, a 6km temporary seawall was constructed for reclamation. About 50,000sq.m. land was formed by using hydraulic filling method.
The band drains (PVD) of total 3.66 million liner meter was installed.
Pilot Test Zone:
About 44,000sq.m. land was filled by using hydraulic filling method after relevant works including sand blanket, rock fill for temporary embankment, geotextile laying completed.
Various ground treatment measures such as band drain, vibroflotation, dynamic compaction and surcharge on the ground etc. had been carried out to obtain useful information for whole project. More than 50 nos. of engineering vessels such as derrick lighters, split hopper barges and 20 nos. of earth work plant, 6 sets of vibroflotation plant and 10 sets of band drain installation plant were deployed for the project.
