| 黄河下游河道场次洪水输沙特性分析 |
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| 引用本文： | 张艳艳,吴保生,傅旭东.黄河下游河道场次洪水输沙特性分析[J].水力发电学报,2012,31(3):70-76. |
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| 作者姓名： | 张艳艳 吴保生 傅旭东 |
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| 作者单位： | 清华大学水沙科学与水利水电工程国家重点实验室,北京,100084 |
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| 基金项目： | 国家重点基础研究发展计划(2011CB403304);中荷战略科学联盟计划(2008DFB90240) |
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| 摘 要： | 本文分析了黄河下游河道1950-1985年277场洪水的输沙特性,建立了考虑各变量高次方和交叉作用的排沙比回归模型。利用输沙率关系和逐步回归的方法,找到了排沙比的主要影响因素,确定了排沙比公式的形式。为进一步验证逐步回归的结论及确定交叉项中各变量的指数,利用实测资料回归分析得出各参数,然后对参数进行检验。并利用1986-1999年13场高含沙洪水实测资料对排沙比公式进行了验证。结果表明,本文所建立的排沙比公式能够反映场次洪水的输沙特性,有助于了解黄河下游河道的输沙规律。
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| 关 键 词： | 泥沙动力学 泥沙输送 黄河下游 排沙比 统计分析 场次洪水 |
Characteristics of sediment transport by flood events in the lower Yellow River |
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| ZHANG Yanyan,WU Baosheng,FU Xudong.Characteristics of sediment transport by flood events in the lower Yellow River[J].Journal of Hydroelectric Engineering,2012,31(3):70-76. |
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| Authors: | ZHANG Yanyan WU Baosheng FU Xudong |
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| Affiliation: | (State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084) |
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| Abstract: | Characteristics of sediment transport in the lower Yellow River were studied based on 277 flood events in the period of 1950-1985,and sediment transport rate curve and stepwise regression were used to find the main influencing factors of sediment delivery ratio(SDR).A new formulation of SDR model was developed with consideration of nonlinear relationship and interactional effects of the variables.These flood events and another 13 hyper-concentrated flood events in the period of 1986-1999 were used to verify model parameters.Results show that the SDR model is a good reflection of sediment transport by flood events and useful for further study of sediment transport in the lower Yellow River. |
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| Keywords: | sediment dynamics sediment transport lower Yellow River sediment delivery ratio statistics analysis flood event |
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