黄河下游河道治理三维数值模拟研究

发布时间：2019-06-19 06:01

【摘要】：本文采用三维水沙数学模型,根据不同重现期洪水的设计水沙条件,对黄河下游花园口至艾山河段的去生产堤方案和两道防线方案进行了模拟计算。重点关注了两种治理方案下不同场次洪水的演进过程、河道冲淤、输沙特性和典型滩区的分洪退水过程,模拟结果表明:与去生产堤方案相比,两道防线方案中的洪水演进过程因防护堤的运用方式而在不同场次洪水中差异明显;同时两道防线方案可有效地保护滩区,减缓滩区大规模的淹没,发挥防灾减灾的功效;此外,从输沙能力变化和冲淤分布比较来看,两道防线方案较去生产堤方案可提高河道的输沙能力,减少河道的淤积。
[Abstract]:In this paper, based on the three-dimensional mathematical model of water and sediment, according to the design water and sediment conditions of flood in different recurrence periods, the deproduction embankment scheme and two defense line schemes from Huayuankou to Aishan River in the lower reaches of the Yellow River are simulated and calculated. The evolution process of different flood under the two control schemes, the characteristics of river scouring and silting, sediment transport and flood diversion and drainage in typical beach area are paid attention to. The simulation results show that compared with the scheme of removing production embankment, the flood evolution process of the two defense line schemes is obviously different in different flood fields because of the application mode of protective embankment. At the same time, the two defense lines can effectively protect the beach area, slow down the large-scale inundation of the beach area, and play the role of disaster prevention and mitigation. In addition, from the comparison of the change of sediment transport capacity and the distribution of scouring and silting, the two defense line schemes can improve the sediment transport capacity of the river and reduce the deposition of the river.
【作者单位】：清华大学水利水电工程系水沙科学与水利水电工程国家重点实验室;长江勘测规划设计研究有限责任公司;长江科学院水资源综合利用研究所;
【基金】：国家重点研发计划(2016YFC0402500) 国家自然科学基金资助项目(51379102,91547204)
【分类号】：TV147;TV85

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