In recent years, the incoming sediments from upstream of the Huai River have continuously decreased. The relationship between flow and sediment has significantly changed. Therefore, the erosion and deposition characteristics of the river could be affected. To investigate this interaction between flow and sediment, the present study was conducted using the Wanglin section in the middle reach of the Huai River as the study site. A 1D hydrodynamic model was developed and validated using field data. Data from 1985–2014 were used as a continuous series while data from 2004–2014 were used as a repetitive series. The sediment variation and distribution processes at different locations were discussed. It was found that the river channel displayed several notable characteristics. In the flow direction, the channel had frontal erosion and backward deposition. The variation rate was relatively slow. With reduced sediment, the overall deposition at the Wanglin section was significantly mitigated. Future recommendations are provided based on the present simulation for flood mitigation along the Huai River.

中文翻译：

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淮河中游水流与泥沙相互作用的数值研究

近年来，淮河上游来沙沉积物不断减少。水流与泥沙的关系发生了显着变化。因此，河流的侵蚀和沉积特征可能会受到影响。为了研究水流和泥沙之间的这种相互作用，本研究以淮河中游的王林河段为研究地点。使用现场数据开发和验证了一维流体动力学模型。1985-2014 年的数据用作连续序列，而 2004-2014 年的数据用作重复序列。讨论了不同地点的沉积物变化和分布过程。发现河道显示出几个显着特征。在流动方向上，河道有锋面侵蚀和反向沉积。变化速度相对较慢。随着泥沙的减少，王林断面的整体泥沙明显减轻。未来的建议是基于当前的淮河防洪模拟提供的。