地理研究 ›› 1988, Vol. 7 ›› Issue (2): 7-16.doi: 10.11821/yj1988020002

• 论文 • 上一篇    下一篇

河型及其转化的判别

陆中臣, 舒晓明   

  1. 中国科学院、国家计划委员会地理研究所
  • 收稿日期:1984-10-18 修回日期:1987-08-01 出版日期:1988-06-15 发布日期:1988-06-15

DISCRIMINATION ABOUT CHANNEL PATTERN AND ITS CHANGES

Lu Zhongchen, Shu Xiaoming   

  1. Institute of Geography, Chinese Academy of Scienes and State Planning Commission of the People's Republic of China
  • Received:1984-10-18 Revised:1987-08-01 Online:1988-06-15 Published:1988-06-15

摘要: 本文分析了影响河型的内外营力,建立了河型与河流能量、河岸不稳定系数、流域形状系数和地壳相对升降强度间的相关关系式。以汉江和黄河下游为例,用水力参数和河床形态指标,判别河型的转化趋势。

关键词: 河型, 内外营力

Abstract: There occur many channel patterns in the field, either straight, meandering or braided one,which in fact, reflects the characteristics of its dran-age area, and is resulted in reaction between internal and external agencies. Also, the channel patterns represeant a balance between hydrologic regimes and geographic environments of their drainage areas, Once this balance is lost, and if time span is long enough, the channel pattern change will take place.Therefore, it is an overall consideration of the influence of both internal and external agencies when channel patterns and their changes are studied. According to data analysis, in this paper a correlative equation between channel pattern and factors has been developed as follows:In which, width-depth ratio, T-strength of uplift and subsidence, QJ-stream power, a-coefficient of drainage area configuration, and A-coefficien of bank stability. Taking the Hanjiang River and the Yellow River as case studies, and using hydraulic parameter and channel bed configuration index, the tendency of channel pattern change has been discriminated. As a result, even though a series of recorded data below reservoir is rather short, the tendency is obvious.

Key words: Chaanel patterns, internal and external agencies