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本文展示了一个计算泥沙输运过程的三维数值模型，此模型的特点在于较准确地计入凝絮及河床侵蚀对于泥沙沉淀过程的影响．关于凝絮及侵蚀的定量计算模型已为大量实验所验证，且是首次被结合运用于三维输运计算．文中对于海湾区域的泥沙输运进行了数值研究，第一次通过定量计算证实了所谓最大浑浊区的存在，并研究了影响其形成及强度的几个因素．这些计算结果不仅证实了数值模型的有效性，而且显示了其在泥沙输运研究方面的作用与潜力．
This paper presents a three-dimensional numerical model for the calculation of sediment transport. This model is characterized by a more accurate account of the effects of flocculation and riverbed erosion on sediment deposition. Quantitative computational models for flocculation and erosion have been validated in a large number of experiments and are the first to be combined for 3D transport calculations. In this paper, the numerical studies of sediment transport in the gulf region are carried out. The first time, the quantitative calculation confirms the existence of the so-called maximum turbidity region and studies several factors that affect its formation and strength. These results not only confirm the validity of the numerical model, but also show its potential and role in sediment transport research.