Research on Hydrodynamic Conditions and Siltation in Outer Channel of Tianjin Port

By using wind,wave,tidal current,sediment numerical models based on the up-todata hydrology,sediment data of field observation and remote sensing data,sediment siltation in the deep channel is computed.According to the hydrological and sediment data of field observation in recent years,statistical analysis is done for the research and the parameters for the numerical model is provided.By building up the multiple nested tidal numerical models,current field before or after the execution of a project under regular weather is simulated.By building up the wind-wave numerical models of the sea and the sediment transport model,wave,tide and sediment models are coupled.The yearly averaged sediment concentration is first computed under the wind and wave action,then the sediment siltation is computed and the annual deposition distribution is also obtained after the channel is built.This paper proposes the characteristics of the deposition distribution in the deep channel after the south and north breakwaters extend to 16+0 km and provides design basis for the excation of the channel.