| In this paper,the numerical simulation method is mainly used to study the tidal current field near and at the entrance of the 200000 DWT channel in Jingtang Port Area.A two-level nested planar two-dimensional tidal current mathematical model of Bohai Sea is established by using Delft3D system.The tidal current field of the 200000 DWT channel in Jingtang Port from June 15 to 16 and June 22 to 23,2009 is simulated,and the reliability of the tidal current mathematical model is verified,In addition,the storm surge in October 2003 was simulated,and the reliability of the mathematical model was verified.Based on the established mathematical model of tidal current,this paper studies the flow field distribution of different layout schemes of sand barriers at different tides,and analyzes the tidal current characteristics such as average velocity,flow direction,maximum velocity,direction and distribution of ebb and flow at the entrance,and explores the influence of breakwater layout on tidal current field of 200000 DWT channel in Jingtang Port Area.Through the analysis of numerical simulation results,it is found that under the condition of spring tide,due to the relative outward movement of the East coastline of the inner and outer dikes of the South Island of the four harbor basins of the 200000 DWT channel,the flip flow effect of the head of the sand retaining dike at the entrance is weakened.The cross current velocity at the junction of the outlet dike and the submerged dike can be effectively reduced by extending the submerged breakwater of the East and West Sand Retaining dikes.Under the joint action of waves and currents,the mathematical model can be generated in the shallow water area on both sides of Jingtang Port Area The coastal current is relatively obvious during storm surges and big waves.The mathematical tidal current model constructed in this paper has a certain reference value for the study of tidal current characteristics in Tangshan port Jingtang Port Area,and also has certain reference significance for waterway engineering and maritime traffic safety management in this area. |
