灌河口沙咀成因分析及治理研究

Dynamic Analysis of Esturine Deposition in Guanhe Estuary

融合前期的研究成果,对苏北灌河口口门沙咀成因进行分析.波浪沿岸输沙的结果表明,年平均净输沙方向为东南至西北,输沙量为3×10~4m^3/a,波浪沿岸输沙引起的沙咀沉积速率为0.5cm/a.从而对沙咀的成因提出了新的解释.并用数学模型计算了沙咀治理方案的各种流场.

This paper presents some results of the entrance bar study of Guanhe estuary through geographical and hydrological approches.New proofs of sediment transport and deposition characters have been obtained through the interpretation of remote-sensed pictures and analysis of columnar section.Based on numerical simulations of current and wave fields,calculations of sediment transport by tidal current and wave induced longshore current have been carried out.The results obtained by geographical and hydrological studies synthesized,an explanation for the formation and evolution of the entrance bar is pressented.Furthermore,preliminary plans for harnessing the waterway to the sea are discussed.