地理学报 ›› 1958, Vol. 24 ›› Issue (2): 128-144.doi: 10.11821/xb195802003

• 论文 • 上一篇    下一篇

冲积河流稳定性指标的商榷

钱宁 1,2   

  1. 1. 中国科学院水利科学研究院;
    2. 水利电力部水利科学研究院
  • 出版日期:1958-04-15 发布日期:1958-04-15
  • 基金资助:

ON THE STABILITY CRITERION OF ALLUVIAL STREAMS

CHIEN NING1,2   

  1. Institute of Hydrotechnical Research, Academia Sinica and Ministry of Water Conservancy and Power
  • Online:1958-04-15 Published:1958-04-15

摘要: 冲积河流的河床由松散的泥沙颗粒所组成,因此在一定的条件下,会发生冲淤变化,和改变方向,这就给重要的水利工程建设,以及正常的航运带来一系列的问题。在有些场合下,我们需要对于河床的变形,作出精确的定量的估计;

关键词:

Abstract: The analysis of this paper may be summarized as follows: 1. Streams, as an integrated part of a drainage basin, assume their characteristics in accordance with the hydrographic and geologic conditions of the basin. Giving the material which forms the boundary of the channel, the form and gradient of an alluvial river are functions of the amount and hydrograph of water and sediment carried to the reach from the upstream watershed. 2. When the capacity of the stream channel to carry the bed-material load is different from the amount of the load brought in by the watershed, erosion and depo- sition result. After self-adjustments of long duration, many of the alluvial rivers are able to carry the water and sediment imposed on them by the basin, and approach a condition of equilibrium or quasi-equilibrium. The sediment carrying capacity of these rivers actually represents the timed average of the sediment production rate of the upstream basin.