库容法在灌区量水中的应用  

Application of Storage Capacity Method in Measurement of Irrigation Water Volume

作　　者：刘德斌 张健 邹玉田 刘娟 何俊生 LIU De-bin;ZHANG Jian;ZOU Yu-tian;LIU Juan;HE Jun-sheng(Institute of Water Science in Coastal Regions of Jiangsu Province,Dongtai 224200,Jiangsu;Water Plarming Office of Dongtai,Dongtai 224200,Jiangsu;Land Development Centre of Dongtai,Dongtai 224200,Jiangsu)

机构地区：[1]江苏省沿海水利科学研究所,江苏东台224200 [2]东台市水务规划办公室,江苏东台224200 [3]东台市土地发展中心,江苏东台224200

出　　处：《节水灌溉》2018年第12期109-113,共5页Water Saving Irrigation

基　　金：江苏省基层灌溉试验站间协作试验专项(2017);江苏省重点水利科技项目(2012079)

摘　　要：针对当前我国大量老旧灌区尚不具备设置固定式量水设施的条件,提出采用库容法量测灌区取水量。以U形防渗渠、矩形防渗渠、梯形防渗渠和梯形土渠作为代表,比较库容法与梯形薄壁堰法和电磁流量计法间的量水差异。结果表明:在小区试验中,与另外两种方法相比,库容法量水结果无显著差异;U形防渗渠、矩形防渗渠、梯形防渗渠以及梯形土渠的泵站取水流量分别为0.146～0.164、0.105～0.121、0.124～0.142和0.083～0.101 m^3/s,相对偏差依次为-2.77%～-2.79%、0.49%～-0.72%、-3.90%～-2.46%和-5.42%～-6.31%,相对偏差整体优于大田验证试验0.19%～1.48%。用库容法量水方便可靠,可作为一种灌区量水技术加以推广应用。According to the present fact that a large number of old irrigation districts in China still cannot equipped with fixed water flow metering facilities,this paper proposed the storage capacity method to measure the water intake in the irrigation area.The differences of water volume between the storage capacity method and the trapezoid thin-plate weir method as well as the electromagnetic flowmeter method were compared in the U-type anti-seepage canal,rectangular-type anti-seepage canal,trapezoid-type anti-seepage canal and trapezoidal soil canal.The results showed that there was no significant difference in water volume in the storage capacity method compared with the other two methods,the water volume of the pumping stations measured by the U-type anti-seepage canals,rectangular-type anti-seepage canals, trapezoid-type anti-seepage canals and trapezoidal soil canals were 0.146 to 0.164m^3/s,0.105 to 0.121m^3/s,0.124to 0.142m^3/s and 0.083to 0.101m^3/s,respectively,the deviation were -2.77%^-2.79%,0.49%^-0.72%,-3.90%^-2.46%and -5.42%^-6.31%, respectively,and the relative deviation were lower than that of the field test,which was 0.19%~1.48%.So as a water volume measurement technology,the storage capacity method is convenient and reliable,and can be widely used in irrigation area.

关 键 词：灌区 量水技术 库容法 灌溉试验 

分 类 号：S275[农业科学—农业水土工程]