استفاده تلفیقی از آب سطحی و زیرزمینی در تخصیص بهینه آب از سد مخزنی در شرایط کمبود منابع آب (مطالعه موردی: سد مخزنی یامچی، اردبیل)

نوع مقاله: مقاله پژوهشی

نویسندگان

1 عضو هیات علمی

2 استادیار گروه اکولوژی، پژوهشکده علوم محیطی، پژوهشگاه علوم و تکنولوژی پیشرفته و علوم محیطی، دانشگاه تحصیلات تکمیلی صنعتی و فناوری پیشرفته.

چکیده

در این پژوهش از یک الگوریتم قطعی مبتنی بر روش بهینه‌سازی ژنتیک (GA) به منظور تخصیص بهینه آب از منابع سطحی و زیرزمینی بین مصارف مختلف در بهره‌برداری از سد مخزنی یامچی در استان اردبیل استفاده شده ‌است. تابع هدف در مدل بهینه، حداکثر نمودن سود حاصل از تخصیص آب به بخش کشاورزی با توجه به الگوی کشت منتخب می‌باشد به طوری که تامین نیازهای شرب و زیست‌محیطی به عنوان محدودیت در مدل بهینه در نظر گرفته شد. متغیرهای بارندگی و جریان ورودی به مخزن به دلیل خاصیت غیر قطعی‌شان، گسسته شده و سپس مدل بهینه به ازای مقادیر مختلف حجم ابتدایی مخزن در شروع بهره‌برداری و هر ترکیب منطقی از بارندگی و جریان ورودی به مخزن (تحت سه سناریو حداقل، نرمال و حداکثر) اجرا شد. نتایج نشان می‌دهد که در سناریوی حداقل و نرمال با افزایش حجم ابتدایی مخزن، سود حاصله بیشتر شده ولی در سناریو حداکثر، حجم ابتدایی مخزن تاثیری بر سود ندارد. هر چه حجم ابتدایی مخزن کم باشد عملکرد نسبی محصولات کم بوده که این موضوع در سناریو حداقل بیشتر نمایان است. همچنین حجم آب قابل تخصیص از منابع آب زیرزمینی به بخش کشاورزی بین 1/3 تا 9/7 میلیون متر مکعب متغیر بوده که با پتانسیل برداشت آب از طریق چاه‌های بهره‌برداری مطابقت دارد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Conjunctive use of surface water and grounwater for optimal water allocation of reservoir dam under water resources shortage (Case Study: Yamchi Reservoir dam, Ardabil)

نویسندگان [English]

  • Amin Kanooni 1
  • seyyed mehdi hashemi shahedani 1
  • s. anvari 2
1 Scientific member of water engineering department
چکیده [English]

In this research, a deterministic algorithm based on the Genetic Optimization (GA) method was used to optimal water allocation from surface and underground resources between different uses in the operation of Yamchi reservoir dam in Ardabil province. The objective function in the optimized model was to maximize the profit of water allocated to the agricultural sector according to the selected cropping pattern, so that the supply of drinking and environmental requirements was considered as a constraint in the optimal model. The rainfall and inflow to the reservoir are discretized due to their non-deterministic property, and then for different values of the initial volume of the reservoir at the beginning of the operation period and any logical combination of rainfall and inflow to the reservoir (under the three scenario: minimum, normal and maximum), the optimal model was implemented. The results showed that in the minimal and normal scenario with increasing initial volume of the reservoir, the profit was increased, but in maximum scenario, the initial volume of the reservoir had no effect on the profit. The smaller the initial volume of the reservoir had the lower the relative yield of the products, which is most evident in the minimum scenario. Also, the amount of water allocated from groundwater resources to agricultural sector varies from 3.1 to 7.9 MCM, which corresponds to the potential for extracting water through utilization wells.

کلیدواژه‌ها [English]

  • Genetic alghorithm
  • Optimal allocation
  • Surface and underground water
  • Water resources shortage
  • Yamchi reservoir dam

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