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皇甫川流域产流产沙数学模型及水沙变化原因分析 预览 被引量:10

Study on Mathematical Model of Runoff Sediment Yield and Analysis on Reasons for Changes of Runoff and Sediment Yields in Huangfuchuan Watershed
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摘要 该模型是从泥沙运动力学的基本理论出发,结合水文学,气象,土壤学和地理地貌学的原理建立起来的。并着重解决了在大流域计算中的流域的地理,地貌的差异性和降雨在时空分布上的不均匀性问题。 A mathematical model, based on the theory of sediment transport combining with the principles of hydrology, meteorology, geomorphology and the characteristics of sediment in the Middle Yellow River, has been established. The thesis emphatically solved the geomorphologic and geographical differences, and the differentiated distribution of precipitation in terms of time and space in the watershed. To formulate this model, Huangfuchuan basin is divided into 3 small watersheds and 14 subwatersheds including 510 small areas with different geomorphologic properties by using the remote sensing technology and analyzing the data of the on the spot investigation. The precipitation in early days was taken into account when selected the runoff coefficients. The results of runoff and sediment yields calculated by this model for single rainstorm agree quite well with the measured data. The sediment yield of the gullies from each small area are calculated by using the model according to its specific conditions. The reasons of the changes of runoff and sediment yields were also analysed. It was shown that the calculated results of this mathematical model is reasonable. Therefore, the model can predict the changes of the runoff and sediment yields if the processes of precipitation are known, and can be spreaded to the calculations of the runoff and sediment yields in single rainstorm in loess region of the Middle Yellow River.
作者 王向东 谢树南 WANG Xiang dong 1,XIE Shu nan 2,CHEN Hai chi 3 (1.China Institute of Water Resources and Hydropower Research;2.Tsinghua University; 3.Hydraulic Institutions of Higher Education in Inner Mongolia)
出处 《泥沙研究》 EI CSCD 北大核心 1999年第5期 56-66,共11页 Journal of Sediment Research
关键词 皇甫川流域 暴雨 数学模型 水沙变化 产流 产沙 Huangfuchuan Gully rainstorm mathematical model changes of the runoff and sediment yields
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参考文献5

  • 1谢树楠,皇甫川降雨产流产沙模型及水沙变化原因分析,1995年 被引量:1
  • 2戴明英,皇甫川降雨水沙变化分析及计算,1995年 被引量:1
  • 3张钧平,皇甫川流域水土保持措施减水减沙效益分析,1995年 被引量:1
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