摘要
本研究根据已往研究中,以几种特定泥沙颗粒级配作试样。进行流变试验。与天然实际高含沙不相符合造成流变失真的情况,分析了渭黄、无定河高含沙水流,依照其具体组成特征。配制不同沙样进行了试验.结果表明:黄河中游地区高含沙水流流型可用宾汉模型描述:流变参数τ-B、η值随细粒泥沙含量和体积浓度增加而增大。并给出了相应的计算式。
The defect status which rhcological cxpcrimcnts have bccn made for some specific sediment samples do not tally with natural flow with hypcrconccntration is directed. Various sediment samples are made according to the composition characteristics of flow with hyperconcentration of Weihe River, yellow River and Wudinghc Rivcr, and the theological experiments arc carried. Our experiment results show that the fluid model of flow with hyperconcentration in middle reaches region of the Ycltow River can be dcscribed as Bingham model, its rhcological parameters increases with content of fine particle and sediment concentration in volume. The formulas of and arc gicn.
出处
《西北水资源与水工程》
1992年第3期25-32,共8页
Northwest Water Resources & Water Engineering
基金
国家自然科学基金
