The results show that the flow field and the process of riverbed erosion and deposition in mountain river can be simulated correctly by this method.
数值实验表明，该模型能正确地模拟山区河流复杂的水流以及河床的冲刷、淤积过程。
The variation of the sink of the Yellow river estuary is the outcome of combined action of erosion and deposition mechanisms of the river estuary.
黄河口尾闾的变化是由黄河口海岸侵蚀机制与堆积机制共同作用的结果。
Soil erosion can result in land degradation and sediment deposition of a river, where soil erosion is connected with some natural factors and human activities.
土壤侵蚀是引起土地退化和河流泥沙淤积的根源，其产生与各种自然因素和人类活动存在一定关系。
The variation of erosion and deposition of the riverbed is highly, because of the river current action.
在长江水流的作用下，河床冲淤变化剧烈。
Through the establishment of two-dimensional mathematical model of flow and sediment, calculate and analyse the effects on river water level, flow field and riverbed erosion and deposition.
通过建立二维水沙数学模型，计算分析对河道水位、流场及河床冲淤的影响。
Through the establishment of two-dimensional mathematical model of flow and sediment, calculate and analyse the effects on river water level, flow field and riverbed erosion and deposition.
通过建立二维水沙数学模型，计算分析对河道水位、流场及河床冲淤的影响。
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