排灌机械工程学报2025，Vol.43Issue(5)：505-514,10.DOI:10.3969/j.issn.1674-8530.24.0093
基于WEAP模型的丰乐河灌区渠系配水优化
Optimization of canal water distribution in the Fengle River Irrigation District using WEAP model
摘要
Abstract
Focusing on the Fengle River Irrigation District in Jiuquan City,Gansu Province,a refined spatiotemporal canal water distribution optimization model based on the WEAP model was developed,which was achieved by selecting a representative hydrological year,conceptualizing the irrigation dis-trict's water distribution infrastructure,accurately identifying the irrigation district's cropping patterns,and determining crop water requirements for different irrigation control areas.The model's objective function minimized irrigation water deficits.Considering crop spatial distribution and water requirements during each growth stage,six different canal water distribution priority schemes were se-lected and compared to analyze the resulting water allocation process and irrigation benefits.The results indicate that,in an extremely dry representative hydrological year,the mismatch between the irrigation district's traditional water distribution practices and actual crop water needs is significant,leading to yield reductions in areas with lower water distribution priority.Prioritizing water allocation to crops with higher water demand,while ensuring adequate ecological flow in the river,results in a higher degree of coupling between water distribution priority and crop water needs,leading to more rational water allo-cation.A water distribution scheme prioritizing the irrigation of maize-growing areas within the district achieves both equitable irrigation benefits and higher crop yields and economic returns,exceeding the average yield of other schemes by6.9%and the average economic benefits by 10.5%.The water deficit rate deviation among canals with the same priority order is only 0.067,which is superior to the 0.163 and 0.164 deviations observed under the irrigation district's traditional single-year and two-year priority schemes,respectively.The findings provide important technical guidance for improving water resource utilization efficiency and benefits in irrigation districts.关键词
渠系优化配水/WEAP模型/种植结构/配水优先级Key words
optimization of canal water distribution/WEAP model/cropping pattern/supply priority分类
农业科技引用本文复制引用
邓建伟,张新民,李昂,降亚楠..基于WEAP模型的丰乐河灌区渠系配水优化[J].排灌机械工程学报,2025,43(5):505-514,10.基金项目
甘肃省重点研发计划项目(22YF7FA081) （22YF7FA081）
甘肃省水利科研与技术推广项目(24GSLK009) （24GSLK009）
