Study on Water Quantity Allocation Optimization for Single Main Canal in Large-Scale Irrigation Area Based on DP Method
文献类型： 外文期刊
作者： Gong, Yi 1 ; Zou, Wenhao 1 ; Yuan, Xiuwei 2 ; Yang, Xiaoling 3 ; Chen, Yongfeng 4 ;
作者机构： 1.Yangzhou Univ, Coll Hydraul Sci & Engn, Yangzhou 225009, Peoples R China
2.Hongze Dist Water Conservancy Bur, Hongze 223100, Peoples R China
3.Chongqing Acad Agr Sci, Chongqing 401329, Peoples R China
4.Liyang Water Conservancy Bur, Liyang 213300, Peoples R China
关键词： canal; optimization; water quantity allocation; dynamic programming; irrigation area
期刊名称：WATER （ 影响因子：3.0； 五年影响因子：3.3 ）
ISSN：
年卷期： 2022 年 14 卷 23 期
页码：
收录情况： SCI
摘要： The mathematical model of optimal water quantity allocation for a single main canal in a large-scale irrigation area was constructed that took the minimal sum of the squared deviation of water shortage for water receiving areas controlled by the single main canal in one given irrigation period as the study target, and the total irrigation quantity of the single main canal as a constraint condition. Taking the optimal allocation of water quantity of each branch canal as decision variables, and several branch canals under the irrigation sequence of the main canal as a state variable, this model was solved by the one-dimensional dynamic programming (DP) method, by which the minimal water shortage and corresponding optimal water quantity allocation of each branch canal was calculated. The proposed method could provide a decision-making reference for optimal water resources allocation of single main canal irrigation areas, and also provide the theoretical basis for optimal water quantity allocation of a main canal with rotation irrigation by strips or with segmented rotation irrigation mode in China's large-scale irrigation areas. Taking Hengliu Main Canal of Zhouqiao Irrigation Area in Jiangsu Province as a study case, optimization results showed that in a medium drought year (p = 75%) and a special drought year (p = 95%), minimal water shortage for water receiving areas controlled by Hengliu Main Canal was respectively 2.57 x 10(4) m(3) and 23.31 x 10(4) m(3) during the ponding period of rice. The corresponding water quantity allocation for each branch canal has reflected a compellent model solution precision and efficiency.
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