平面二维悬沙数学模型计算河口闸下淤积的缺陷及弥补方法

Study on limits and remediation of 2-D suspended sediment model of siltation downstream of estuary sluices

分析了感潮河段闸下淤积机理及用平面二维悬沙数学模型模拟闸下淤积存在的缺陷.提出采用分析模式预测近闸段的泥沙平均淤厚,其余河段由平面二维悬沙数学模型预测淤积分布相结合的方法.实例分析表明,该方法可为河口建闸可行性研究提供依据.

The silting mechanism downstream of sluices and limits of the 2-D suspended sediment model to simulate the silting downstream of sluices in a tidal reach are analyzed. A new method is presented： the average silting thickness in the reach approaching the sluice is predicted by an analytical model, and the silting distribution in the other reach is predicted by a 2-D suspended sediment model. Analysis results of an example show that this method can supply the foundation for the feasibility study of sluice construction in the estuary.