灌区渠道标准断面流量拟合参数影响因素分析  

Analysis of Influencing Factors on the Fitting Parameters of Canal Standard Cross-section of Irrigation Area

作　　者：张亚东[1] 卢成[1] 郑世宗[1] 温进化[1] ZHANG Ya-dong;LU Cheng;ZHENG Shi-zong;WEN Jin-hua(Zhejiang Institute of Hydraulics and Estuary,Hangzhou 310020,China)

机构地区：[1]浙江省水利河口研究院

出　　处：《水电能源科学》2019年第10期38-40,共3页Water Resources and Power

基　　金：浙江省水利河口研究院院长科学基金项目(农水A18002)

摘　　要：渠道标准断面量水是灌区量水的主要方法之一。通过对浙江省5个灌区共16个渠道标准断面进行率定,建立水位流量关系曲线,拟合形成渠道流量幂函数公式,确定流量拟合系数K和指数u,并分析渠道宽度、坡降和衬砌型式对流量拟合系数K和指数u的影响。结果表明,渠道标准断面流量拟合系数K和指数u与渠道宽度和坡降总体呈正相关关系,并随渠道衬砌型式的不同发生相应变化。Water measuring of canal standard cross-section is one of the main methods for water measuring of irrigation area.By calibrating 16 canal standard cross-sections of 5 irrigation areas in Zhejiang Province,the stage discharge relation curve is established,and the power function formula of canal discharge is fitted.And then the fitting coefficient"K"and index"u"are determined.The influence of canal width,slope and lining type on the fitting parameters are analyzed.The results show that the fitting parameters of canal standard cross-section are positively correlated with canal width and slope,and change with the different lining types of canal.

关 键 词：灌区 渠道 标准断面 拟合参数 影响因素 

分 类 号：S275.2[农业科学—农业水土工程]