地理学报

地理学报 ›› 1994, Vol. 49 ›› Issue (5): 477-480.doi: 10.11821/xb199405010

• 论文 • 上一篇    

关于“利用水沙关系式来计算冲淤分界流量”的讨论

杨积武   

  1. 中国科学院国家计划委员会地理研究所, 北京 100101
  • 出版日期:1994-09-15 发布日期:1994-09-15

ON THE DISCUSSION OF "CALCULATING THE CRITICAL DISCHARGE BY THE RELATION BETWEEN SEDIMENT DISCHARGE AND DISCHARGE"

Yang Jiwu   

  1. Institute of geography, Chinese Academy of Sicence and Stare Planning Commision, Beijing 100101
  • Online:1994-09-15 Published:1994-09-15

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摘要： “大水冲刷，小水淤积”是冲积性河流普遍存在的理象。如何确定大小水的界限，也就是分界流量的大小，参考文献［１］曾利用水沙关系式联立的方式进行求解，本文就此方法的可行性作一讨论。

关键词: 水沙关系式, 分界流量

Abstract: The Author thinks that it is discussible to calcaulate the critial discharge by using the relation,Qs=kQm, in two stations. where Qs is sedimemt discharge, Q is discharge, k is coefficient. and m is exponent.The reasons are 1) the values of m and k vary intensive, which have the relations with sediment concentration, slope, and morphology of the river, and the values of the above three vary in a large range also . 2) between two stations the discharges are not equal at the same time . 3) the calculated values of discharges will vary largely, when the values of m in two stations are similar.

Key words: relation between sediment discharge and discharge, critical discharge