地理科学

地理科学 ›› 1989, Vol. 9 ›› Issue (4): 336-345,387.doi: 10.13249/j.cnki.sgs.1989.04.336

• 论文 • 上一篇    下一篇

沿程淤积与溯源淤积对黄河下游演变影响的数值模拟

励强, 陆中臣   

  1. 中国科学院, 国家计委地理研究所 北京
  • 出版日期:1989-07-20 发布日期:1989-07-20
  • 基金资助:
    所长基金资助项目

MATHEMATICAL APPROACH TO THE EFFECT OF CHANGE OF RIVER CAUSED BY THE LONGITUDINAL AND UPSTREAM DEPOSITION IN THE LOWER REACHES OF THE HUANGHE RIVER

Li Qiang, Lu Zhongchen   

  1. Institute of Geography, Academia Sinica, the State Planning Commission, Beijing
  • Online:1989-07-20 Published:1989-07-20

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被引次数

8 | 5

摘要： 沿程淤积溯源淤积的共同作用导致黄河下游纵剖面的调整。本文从数学模型出发,探讨溯源淤积的作用和影响范围,得到溯源淤积厚度占总淤积厚度的百分比在渔洼为48%、利津为33%,洛口为5%,艾山为0%。潮源淤积末端以不超过艾山为限.另外,本文还用沿程波和溯源波的概念分析数值结果,得到满意的结论.

Abstract: The effect of longitudinal deposition together with the upstream deposition causes the adjustment of longitudinal profile in the lower reaches of the Huanghe River. Upstream deposition depends on the change of base level. From mathematical model, the effect and scope of upstream deposition are dealt with,and longitudinal and upstream deposition exist conjugate relalion. Generally, percentage of depth of upstream deposition in total deposition depth is 48% in Yuwa, 33% in Lijin, 5% in Luokou, and 0% in Aishan in the lower reaches of the Huanghe River. The end point of upstream deposition does not exceed the Aishan at most. Besides,the authors make use of the concept of longitudinal wave and upstream wave to analyze the numerical results and receive the satisfactory conclusions.