中国农业大学学报2025，Vol.30Issue(6)：183-193,11.DOI:10.11841/j.issn.1007-4333.2025.06.17
大型灌区多级渠系多目标配水优化研究与应用
Multi-stage canal system and multi-objective water distribution optimization in large-scale irrigation districts and its application
摘要
Abstract
Aiming at the complexity of large-scale irrigation canal system structures and the problems of multiple parameters,complex coding,and large computational complexity when formulating water distribution plans,this study coordinates the flow relationships of water between channels during the multilevel canal system water distribution the flow relationships of water between channels to build a multi-objective and multilevel canal system combined with the optimization of water distribution mode.The model is based on the theory of coordination of system decomposition,and dry,branch and bucket,the three-level irrigation canal system,are decomposed into a two-tiered progressive coordination model.The first layer is a multi-objective water distribution model with objectives of minimizing water loss and irrigation district water deficit,and the second layer is an overall coordinated water distribution model constraining the whole three-level canal system in irrigation district based on genetic algorithm solution.Taking the summer irrigation data of 2023 in a large-scale irrigation district in eastern Shaanxi Province as an example,the optimization effect of the model constructed in this study is verified and compared and analyzed with original empirical water distribution scheme of irrigation district.The results show that:1)The total amount of irrigation water after optimization is 10.064 5 million m3,which is close to the original plan of 10.355 4 million m3.However,the water distribution cycle is shortened to 36 d,which is a significant reduction compared with the original 56 d,and effectively improves irrigation efficiency.2)About 89.7 percent of channel distribution flows are improved and 37.9 percent of channel flows are increased by more than 80 percent,which not only improves the overflow capacity of the channels but also reduces the gate capacity.greatly improved.The management operation of the irrigation district is symplified.3)The optimization scheme reduces water transmission leakage loss by 3.219 million m3.The canal irrigation water utilization coefficient is increased by 0.14,which meets the water demand of most of the canals in the irrigation district.Therefore,the model and algorithm constructed in this study can better solve the problem of optimized water distribution in multi-stage irrigation canal systems,and provide a theoretical basis and practical reference for formulating scientific and reasonable water distribution schemes in irrigation districts and promoting the intelligent construction of irrigation districts.关键词
灌溉渠系/优化配水/分解协调思想/遗传算法/多目标Key words
irrigation canal system/optimal water distribution/decomposition-coordination method/genetic algorithms/multiobjective分类
农业工程引用本文复制引用
皮滢滢,王文娥,胡笑涛,王辰,张宝忠,吴彩丽..大型灌区多级渠系多目标配水优化研究与应用[J].中国农业大学学报,2025,30(6):183-193,11.基金项目
国家自然科学基金项目(U2243235) （U2243235）
国家重点研发计划(2022YFD1900402) （2022YFD1900402）
