摘要
用极限浓度综合反映诸因素对高含沙水流流变参数——刚性系数和宾汉极限切应力的影响,提出了确定极限浓度的新方法,并根据流变试验资料,建立了精度较高、适用范围较广的流变参数表达式。
Effects of all factors (sediment concentration, diameter, shape etc) on rheological parameters can be reflccted by concentration (C_v) of solid material——including sediment and unfree water. The limit concentration C_(vm) is used to express C_v and a new method to determine C_(vm) is also put forward. Meanwhile, the inner relation between rheological parameters and the free water concentration (1—C_v) is revealed. In accordance with the data of rheological experiment, the theological perameter expression of high accuracy and widely applied field is set up.
关键词
含沙
水流
粘度
流变参数
silt carrying flow
viscosity / rheological parameter
