بهینه‌سازی بهره‌برداری تلفیقی از منابع آبهای‌سطحی و زیرزمینی حوضه آبریز رودخانه ابهر

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استادیار دانشکده مهندسی آب، دانشگاه صنعت آب و برق، تهران

2 دانشجوی دکترای مهندسی عمران آب، دانشگاه علم و صنعت ایران، همکار پژوهشکده منابع آب، مؤسسه تحقیقات آب

چکیده

بهره‌برداری تلفیقی منابع آبهای سطحی و زیرزمینی در مقایسه با بهره‌برداری جداگانه این منابع، منجر به افزایش اعتمادپذیری و کاهش کمبودها و هزینه‌های بهره‌برداری می‌گردد. در این تحقیق دو گزینه بهره‌برداری از آب زیرزمینی و بهره‌برداری تلفیقی منابع آب حوضه ابهر مورد توجه قرار گرفت. به‌این منظور دو مدل بهینه‌سازی پارامتر گسترده به نامهای GWOpt و CONJ به‌ترتیب برای بهره‌برداری آب زیرزمینی و بهره‌برداری تلفیقی آبهای‌سطحی و زیرزمینی، هر دو با هدف حداقل‌سازی افت تراز آبخوان ارائه شد. بالا بودن حجم محاسبات مدل‌های بهینه‌سازی گسترده در سیستم‌های واقعی، محدودیتهای مختلفی در پی داشته است. در این راستا، به‌منظور توسعه مدل‌ها از رویکرد ماتریس پاسخ واحد استفاده شد. مدل‌های بالا در قالب برنامه‌ریزی خطی تهیه گردید. در این رویکرد ابتدا رفتار آب زیرزمینی به‌کمک مدل شبیه‌سازی MODFLOW در قالب ماتریس‌های پاسخ واحد مشخص شد و این مقادیر در مدل بهینه‌سازی قرار گرفت. نتیجه حل مدل بهینه‌سازی نشان داد که میزان افت تراز میانگین برای مدل CONJ از مدل GWOpt کمتر است. همچنین در مقایسه با مدل شبیه‌سازی که بیانگر شرایط بهره‌برداری واقعی است، با لحاظ نمودن محدودیتهای مختلف، در مجموع شش درصد کاهش افت به‌دست آمد. به‌منظور کاربرد عملی مدل پیشنهادی، یک نرم‌افزار که در حکم یک سیستم تصمیم یار بود، توسعه یافت.

کلیدواژه‌ها


عنوان مقاله [English]

Conjunctive Use of Surface Water and Groundwater Resources in Abhar River Basin

نویسندگان [English]

  • Saeid Alimohammadi 1
  • Hojjat Hosseinzadeh 2
1 Assist. Prof., Dept. of Water Resources Eng., University of Water and Power Technology, Tehran
2 Ph.D Student of Civil Eng., Iran University of Science and Technology, Member of Water Resources Research Center, Water Research Institute, Tehran
چکیده [English]

Conjunctive use of surface and ground-water resources, compared to disjunctive operation of these systems, increases system reliability and decreases water deficits and operational costs. In this study, the two alternatives of groundwater (GWOpt model) operation and conjunctive use of surface and groundwater resources (CONJ model) are considered for Abhar river basin in Iran. In both models, the objective function is minimization of mean groundwater drawdown. The vast amount of calculations needed for distributed parameter optimization models is a major limitation in real systems. However, the above two models are linear and the unit response matrix approach is utilized. The first step in this approach is to calculate the unit response matrices (as the behavior of the groundwater system) using a simulation model, such as MODFLOW. The next step involves incorporating these matrices into the optimization model. The results obtained from the solution of the optimization model indicate that the mean drawdown in the CONJ model is less than that in the GWOpt model. In addition, a decrease of only 6% decrease was observed in the mean drawdown when compared to the simulation model.  A decision support system has also been developed that enables the model to be used in real situations.

کلیدواژه‌ها [English]

  • Conjunctive use
  • Unit Response Matrix
  • Distributed parameter optimization
  • Simulation
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