摘要
在论述黄河山东段泥沙时空分布及不同时期泥沙粒径变化的基础上，重点分析了洪水过程中沙峰的运移规律：山东河段沙峰的削峰率为沿程向下游递减，且与沙峰的大小成正比；沙峰沿程输沙量变化，高村至艾山段沿程减小，艾山至利津段基本稳定。沙峰运移过程中与相应洪峰发生的时间一般是不同步的，高村至艾山段，沙峰常超前于洪峰，而艾山至利津段，沙峰常滞后于洪峰；不漫滩洪水，沙峰一般滞后于洪峰，漫滩洪水，沙峰一般超前于洪峰。
Based on the analysis about the temporal and spatial distribution of sediment ital and its sign in shandong reaches of the Yellow River routing of sediment discharge during floods is studied in this paper.The results show that the rate of attenuation of the peak sediment discharge decreases toward lower reaches. and is in direct proportion to the peak sediment discharge. The sediment ital during a find decreases from Gaocun to Aishan and varies little from Aishan to Lijin. The peak of sediment discharge and peak of flood flow don't tube place at the same time. The sediment peak often appers before the flood gb from Gaocun to Aishan, but often lags behind flood peak from Aishan to Lijin. The sediment peak often appears before flood peak for overbenk flow,but often lags for flow confined in the channel.
出处
《人民黄河》
北大核心
1994年第4期1-4,共4页
Yellow River
关键词
黄河
泥沙
沙峰运移
沿程输沙
sediment peak movement
sediment discharge with distance
appearing before
lagging behind
Yellow River in Shandong
