近岸海域近底泥沙通量计算方法分析及应用

摘要

The near-bed sediment flux is the key to near-shore sediment movement and seabed evolution prediction. The commonly used calculation methods include sediment carrying capacity method and shear stress method. The paper listed several computational formulas for near-bed sediment flux calculation, and preliminary verified the unity of the two methods in the for-mula form through mathematical deduction. Combined with the mathematical model of Zhoushan Islands silty sea area and Jiangsu costal muddy sea area, the near-bed sediment flux was calculated by using the two methods and the unity of the two methods in practical application was demonstrated.%近底泥沙通量问题是近岸泥沙和海床冲淤演变预测的关键，常用的计算方法包括挟沙力方法和切应力方法。列举了近底泥沙通量的常用计算公式，并通过数学推导初步证明了两种方法在公式形式上的统一性。结合舟山群岛粉砂质海域和江苏沿海淤泥质海域的数学模型，分别用这两种方法计算近底泥沙通量，为论证其在实际应用中一致性提供了数据支撑。