摘要
引大入秦工程(以下简称引大工程)建成初期主要以秦王川农业供水为主,但随着兰州新区的建设发展,其供水对象开始向城市生活用水和工业用水转型,如何实现有限水资源的合理配置是目前研究的重点问题。基于此,依据引大工程供水区(以下简称引大供水区)可持续发展要求,构建以实现经济、社会、生态效益最大化为目标函数,可供水量、输水能力、用户需水量、排水系统排水量与变量非负为约束条件的多目标水资源优化配置模型,使用遗传算法进行求解。结果表明:2025年引大供水区不同用水部门配水量(保证率P=50%、P=75%)分别为生活用水8323.85×10^(4)、8322.49×10^(4)m^(3),农业用水15001.95×10^(4)、15631.53×10^(4)m^(3),工业用水11111.00×10^(4)、11100.00×10^(4)m^(3),生态用水946.88×10^(4)、947.02×10^(4)m^(3),各部门总配水量与优化前供水量4.23×10^(8) m^(3)相比,达到供需平衡;2030年引大供水区不同用水部门配水量(保证率P=50%、P=75%)分别为生活用水12650.51×10^(4)、12666.53×10^(4)m^(3),农业用水16397.77×10^(4)、17019.70×10^(4)m^(3),工业用水20498.00×10^(4)、20508.00×10^(4)m^(3),生态用水948.00×10^(4)、948.88×10^(4)m^(3),不同保证率下各部门总体缺水率分别为12.27%、13.38%。2025—2030年引大供水区的非农业用水结构将大幅提升,农业灌溉用水量降低。研究结果可为引大供水区优化水资源配置决策提供参考依据。
Datong River-to-Qinwangchuan Basin Water Diversion Project(hereinafter referred to as the DQ Project)was proposed initially for the purpose of agricultural water supply in the Qinwangchuan Basin at the early stages,but with the development of the construction of new district in Lanzhou,urban domestic water use and industrial water use started to take the largest share of the water supply,which brought the conundrum of reasonable allocation of limited water resources in current research.Regarding to this problem,a multi-objective water resources optimization allocation model was established with the realization of economic,social and ecological benefit maximization as the objective function,the non-negtiveness of water supply,water conveyance capacity,water demand,discharge of drainage system and variables as the constraint condition,according to the sustainable development requirements of the Datong River-to-Qinwangchuan Basin Water Diversion Project water supply area(hereinafter referred to as the DQ water supply area),then the model was solved by genetic algorithm.The results show that in 2025,the water distribution(assurance rate P=50%,P=75%)of different water use departments in the DQ Water Supply Area will be 83.2385×10^(6)and 83.2249×10^(6)m^(3)of domestic water use,150.0195×10^(6)and 156.3153×10^(6)m^(3)of agricultural water use,111.1100×10^(6)and 111.0000×10^(6)m^(3)of industrial water use,9.4688×10^(6)and 9.4702×10^(6)m^(3)of ecological water use,respectively.The total water distribution of the departments is in balance with the water supply of 423×10^(6)m^(3)before optimization.In 2030,the water distribution(assurance rate P=50%,P=75%)of different water use departments in this area will be 126.5051×10^(6)and 126.6653×10^(6)m^(3)of domestic water use,163.9777×10^(6)and 170.1970×10^(6)m^(3)of agricultural water use,204.9800×10^(6)and 205.0800×10^(6)m^(3)of industrial water use,9.4800×10^(6)and 9.4888×10^(6)m^(3)of ecological water use,respectively,and the overall water shortage rate of each department under different assurance rates is 12.27%and 13.38%respectively.From 2025 to 2030,the non-agricultural water use structure of the DQ Water Supply Area would increase greatly,which in turn would cause the decrease of the agricultural water use.In general,the research results can provide some references for the decision-making of the optimal water resources allocation in the DQ Water Supply Area.
作者
孙凯悦
牛最荣
王建旺
张小艳
SUN Kaiyue;NIU Zuirong;WANG Jianwang;ZHANG Xiaoyan(College of Water Conservancy and Hydropower Engineering,Gansu Agricultural University,Lanzhou 730070,China;Gansu Water Resources Utilization Center of Datong River-to-Qinwangchuan Basin Water Diversion Project,Lanzhou 730300,China)
出处
《水资源与水工程学报》
CSCD
北大核心
2023年第3期93-100,共8页
Journal of Water Resources and Water Engineering
基金
甘肃省重点研发计划项目(21YF5FA094)
甘肃省水利科学试验研究与技术推广计划项目(甘水建管发[2021]71号-7、甘水建管发[2021]71号-70)。
关键词
水资源优化配置
多目标
遗传算法
引大入秦工程
optimal allocation of water resources
multi-objective
genetic algorithm
Datong River-to-Qinwangchuan Basin Water Diversion Project
