انتخاب مناسب‌‌ترین موقعیت برای احداث سد با روش TOPSIS (منطقه مورد مطالعه: سد گیوی، استان اردبیل)

نوع مقاله: مقاله پژوهشی

نویسندگان

دانشگاه علوم کشاورزی و منابع طبیعی گرگان

چکیده

یکی از بخش‌های اصلی در مطالعه‌های مرحله شناخت پروژه‌های سدسازی، تعیین موقعیت مناسب برای احداث سد(1) در مسیر رودخانه موردنظر است. موقعیت یک سد در درجه اول به انتخاب صحیح ساختگاه آن سد بستگی دارد. در انتخاب محل ساختگاه یک سد لازم است که در مرحله اول دو شاخص اصلی «تامین پایداری بدنه و مخزن» و «آب‌بندی محدوده احداث سد» بررسی شوند. در مرحله بعد، نقاط واجد شرایط از لحاظ دیگر عوامل موثر در انتخاب ساختگاه سد که شامل «ساختارهای زمین‌شناسی و سنگ‌شناسی» و «شرایط اقتصادی- اجتماعی» هستند بررسی می‌‌شوند. هدف از انجام این مطالعه پاسخ به این سوال‌هایی است که آیا محل کنونی انتخاب شده برای سد گیوی از لحاظ پارامترهای موثر انتخاب محل سد، بهترین مکان در مسیر رودخانه گیوی چای هست یا خیر؟ و اگر نقاط مناسب‌‌تری نسبت به محل کنونی بر روی رودخانه برای احداث سد وجود دارد، نقاط ضعف محل کنونی نسبت به نقاط پیشنهادی چیست؟ و آیا با شناخت نقاط ضعف، راه‌کارهایی برای تقویت این نقاط ضعف وجود دارد؟ در این مطالعه که در منطقه‌ای بین شهرستان‌های خلخال و گیوی در استان اردبیل صورت گرفت، براساس اطلاعات به دست آمده از بررسی پارامترهای ذکر شده، دو نقطه به عنوان مناسب‌ترین مکان‌ها پیشنهاد شدند و پس از مقایسه این دو نقطه با محل کنونی سد با روش TOPSIS و انجام حساسیت‌سنجی، مشخص شد نقطه پیشنهادی اول (A) دارای بیشترین توان است. در انتها نقاط ضعف در انتخاب محل کنونی سد گیوی نسبت به دو نقطه پیشنهادی برشمرده و راه‌کارهایی برای تقویت این نقاط ضعف پیشنهاد شد.

کلیدواژه‌ها


عنوان مقاله [English]

Selecting the Most Suitable Dam Construction Site Using TOPSIS Method (Case Study: Guivi Dam, Ardebil Province - IRAN)

نویسندگان [English]

  • Ali Reza Mikaeili -T.
  • Abdolrassoul Salmanmahiny
  • Mobin Kazeminia
Gorgan Univ. of Agricultural Sciences & Natural Resources (GUASNR)
چکیده [English]

One of the main steps in dam construction projects is determination of the optimum dam site in the given river basin. Dam site primarily depends on availability of a deep valley and suitable geomorphology therein. In the selection of the dam site, sustainability of the dam structure and sealing of the area affected by the reservoir behind dam are also very important. Other important factors consist of geological and lithological structures and socio- economic aspects of the area. In this study, we assessed the current location of the Guivi dam and compared the strengths and weaknesses of this dam with two proposed locations in the vicinity. In doing so, we also sought to understand the ways to counter the weaknesses of the current dam. The study area located between the Khalkhal and Guivi Towns in Ardebil Province. We used information already provided for the Guivi dam and suggested two other appropriate sites in the area. Then, we compared the current location of the dam with the two sites using TOPSIS method. A sensitivity analysis showed that the proposed site (A) was the best among the three. Finally, we considered weaknesses of the current location of the Guivi dam and proposed ways to circumvent these weaknesses.

کلیدواژه‌ها [English]

  • Dam site
  • Geological and lithological structures
  • Guivi dam
  • Guivi river
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