坡面流水力学参数的估算  

Estimate of Hydraulic Parameters of Overland Flow

作　　者：李凤英[1] 李琳[1] 何小武[1] 

机构地区：[1]江西农业大学国土资源与环境学院,江西南昌330045

出　　处：《江西农业大学学报》2006年第3期477-480,共4页Acta Agriculturae Universitatis Jiangxiensis

基　　金：江西省教育厅基金项目(6-11-13-04)

摘　　要：径流流量、流速、水深以及地表坡度是水动力学特性的重要参数,且相互关系密切。采用水槽试验,研究分析了径流水深、流速与流量、坡度的相关关系。结果显示,径流流速随坡度和流量增加,呈幂函数形式递增,相关系数R2为0.92;水深随坡度的增加,呈线性递增趋势,随流量增加,呈幂函数递增趋势,其相关系数R2为0.98;对关系模型进行检验发现,它们都具有很好的估算效果。Relationships between flow velocity, flow depth, flow discharge, and slope gradient were simulated in a hydraulic flume. The results showed that the flow mean velocity could be well simulated by a power function of flow discharge and slope gradient. The determination coefficient R^2 was 0.92. Flow depth increased as a linear function of slope gradient, and increased as a power function of flow discharge. The determination coefficient R^2 was 0.98. The prediction models were supported by previous data.

关 键 词：水力学参数 坡面流 估算 

分 类 号：S273.29[农业科学—农业水土工程]