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首页> 外文会议>International Conference on Architectural, Civil and Hydraulics Engineering >Research on the Hydrodynamic Characteristics of Typical Encountering Flood in the Lower Han River, China
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Research on the Hydrodynamic Characteristics of Typical Encountering Flood in the Lower Han River, China

机译：汉江下汉河典型遇到洪水流体动力学特征研究

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摘要

Han River is the largest tributary of the Yangtze River, the hydrodynamics characteristics in the lower Han River is under the influence of upstream flow and sediment discharge and the backwater level of Yangtze River. Based on the one-dimensional hydrodynamic mathematical model, the hydrodynamic characteristics in the lower Han River were simulated and analyzed. The results show that the hydrodynamic characteristics change significantly under the different combinations of stage-discharge in the downstream and upstream. On the one hand, when the autumn flood occurred in the Han River basin after the flood season in the Yangtze River, there will be a sharp increase of water surface gradients and flow velocity. On the other hand, there is also an obvious decrease of flow velocity and water surface gradients when the multi-year average discharge coupling with the high water level of Yangtze River. It should be highly attentive to the hydrodynamic characteristic variation with the different combinations of stage-discharge in the two rivers, which is adverse to the dike safety, channel erosion and the waterway maintenance along the channel of Han River.
机译：汉江是长江最大的支流，下汉河的流体动力学特征是在上游流量和沉积物排放的影响和长江的后水位。基于一维流体动力学数学模型，模拟和分析了下汉河中的流体动力学特征。结果表明，流体动力学特性在下游和上游的阶段放电的不同组合下显着变化。一方面，当秋季洪水发生在汉江流域后，在长江汛期后，水面梯度和流速的急剧增加。另一方面，当与长江高水位的多年平均放电联接时，流速和水面梯度的明显减少。它应该高度关注两条河流中阶段排放的不同组合的流体动力学特征变化，这与汉江渠道的堤防安全，通道侵蚀和水路维护不利。

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