摘要
本文根据西川庆阳水文站３６年的水文资料，给出了环江流域的四种水沙关系；对治理前后的泥沙颗粒级配变化情况进行了分析；根据多年平均含沙量计算了高含沙供水τＢ和η值，还对流域高含沙洪水运动模式进行了定量探讨。
According to 36 years'hydrologic data of Xichuan station in Qingyang County,this paperstudies the distribution characteristics of water and sediment,establishes four relationships between water and sediment,analyses the variations of sediment grading before and after the control,calculates the values of τB and η,discusses the Qs～Q relationship and the motion pattern ofhigh concentration flood quantitatively. The results show that:(1)The characteristics of highconcentration flood in Huanjiang river basin appears to have the good relationship betweeen water and sediment.(2)The coarse sand is decreased and the sediment grain size becomes fine after basin control.(3) Through the long term average sediment concentration,the calculationsare obtained τB=0.191N/m2,η=3.127×10-8kg·s/cm2.(4)The motion pattern of high concentration flood is similar to that of the Binhan fluid.
出处
《泥沙研究》
CSCD
北大核心
1994年第4期86-93,共8页
Journal of Sediment Research
基金
黄河流域水土保持科学研究基金
