基于畦首水深和田面水流推进过程的畦灌流量反演方法  

Inversion method of border flow based on headwater depth and advance process of surface water flow

作　　者：杨静[1,2] 缴锡云[1,2] 刘懿 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,海南三亚572000 [2]河海大学水利水电学院,江苏南京210098 [3]三亚市水利水电勘测设计院,海南三亚572000

出　　处：《水资源与水工程学报》2016年第1期238-240,共3页Journal of Water Resources and Water Engineering

基　　金：国家自然科学基金项目(50979025);水利部公益性行业专项经费项目(201301014)

摘　　要：针对畦灌稳健设计中单宽流量难以实现无干扰测量的问题,研究入畦流量的反演方法。利用在中科院南皮生态农业试验站进行的灌水试验数据,采用两点法估算入渗参数,引入地表储水形状系数和地下储水形状系数,根据畦首水深和水流推进的数据,估算了畦田的单宽流量。与实测单宽流量相比,N1、N2、N3号畦田的相对误差分别为13.27%、8.02%、11.24%。结果表明:该方法用于畦灌稳健设计中单宽流量控制误差调查是可行的。Aimed at the problem that the single wide flow is difficult to measure without interference in robust design of border irrigation system,the paper analyzed the inversion method of border flow rate. The infiltration parameters were estimated by two point method based on the data collected in Nanpi Eco- Agriculture experimental station. Then it estimated the single wide flow based on the data of border headwater depth and water advance process,and introduced two parameters of surface shape factor and underground shape factor. Compared with the measured single wide flow,the relative errors in N1,N2 and N3border are 13. 27%,8. 02% and 11. 24% respectively. Results show that the inversion method is feasible for error control of single wide flow in the robust design of border irrigation.

关 键 词：畦灌 入渗 水深 水流推进 流量 反演 

分 类 号：S275.2[农业科学—农业水土工程]