ABSTRACT
ABSTRACT: Suspended sediment in the sea increases rapidly as a result of reclamation projects, which in turn influence the marine eco-system. To investigate the possible ecological impact of suspended sediment produced during the construction of Fengwei reclamation project at Meizhou Bay, this research analyzes the suspended sediment extrusion by blast (5.17 t/s) and riprap (1.39 kg/s) respectively. Based on two-dimensional tidal current field model of the project area, the study analyzes each mesh point (40 m × 40 m) in the construction area using two-dimensional suspended load modal. The numerical simulation shows that the scope and pattern of suspended sediment diffusion are affected by the tidal current. The project construction can cause the suspended sediment whose density being more than 10 mg/L to form a maximum envelop area of 5.848 km2 in tidal current. This impact mostly disappears 9 hours after the construction. The result provides a reference for the environmental management during the construction period.
