Study on Water Quantity Allocation Optimization for Single Main Canal in Large-Scale Irrigation Area Based on DP Method
Author:
Gong YiORCID,
Zou Wenhao,
Yuan Xiuwei,
Yang Xiaoling,
Chen Yongfeng
Abstract
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 × 104 m3 and 23.31 × 104 m3 during the ponding period of rice. The corresponding water quantity allocation for each branch canal has reflected a compellent model solution precision and efficiency.
Funder
National Key R&D Program of China
Natural Science Foundation of China
Yangzhou University Science and Technology Innovation Fund in 2019
Subject
Water Science and Technology,Aquatic Science,Geography, Planning and Development,Biochemistry
Reference20 articles.
1. Optimization and parameter analysis for channel cross section with concrete lining in northern irrigation district;Liu;Trans. Chin. Soc. Agric. Eng.,2015
2. Optimization of irrigation channel section based on cat swarm algorithm and analysis on design parameters;Shang;J. Drain. Irrig. Mach. Eng.,2016
3. Optimal model of channel layout based on minimum spanning trees;Xu;Trans. Chin. Soc. Agric. Eng.,2017
4. Agricultural water allocation efficiency in a developing country canal irrigation system;Akram;Environ. Dev. Econ.,2017
5. Integrated stepwise approach for optimal water allocation in irrigation canals;Kanooni;Irrig. Drain.,2014
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献