مقایسه دقت دو روش فازی گاما (Fuzzy-GAMMA) و تحلیل سلسله مراتبی (AHP) با هدف پتانسیل‏ یابی فلز مس در زون فلززایی ملایر-الیگودرز-اصفهان

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده زمین شناسی، پردیس علوم، دانشگاه تهران، تهران، ایران

2 گروه زمین‌شناسی، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران

3 گروه زمین شناسی، دانشکده علوم، دانشگاه تهران، تهران، ایران

چکیده

کمربند فلززایی ملایر-الیگودرز-اصفهان با قرار گرفتن در زون سنندج-سیرجان میزبان تعداد زیادی از ذخایر فلزی می باشد. در این پژوهش با استفاده از روش های منطق فازی (Fuzzy-GAMMA)، تحلیل سلسله مراتبی (AHP) و بر اساس وزن دهی به لایه های اکتشافی، مدل سازی فلز مس در منطقه مورد مطالعه صورت گرفت. ابتدا تمام لایه ها و زیرلایه های اکتشافی شامل لیتولوژی، زمین شیمی و چگالی گسل ها با استفاده از روش منطق فازی (Fuzzy-GAMMA) وزن دهی و در دامنة 0 تا 1 قرار گرفتند. سپس لایه های فازی سازی شده طبق وزن های اختصاص یافته با مقدار گامای (γ) 9/0 با یکدیگر تلفیق و نقشه های پتانسیل یابی فلز مس در منطقه مورد مطالعه بر اساس روش منطق فازی (Fuzzy-GAMMA) حاصل شد. پس از آن با استفاده از روش تحلیل سلسله مراتبی (AHP) و با تشکیل دادن ماتریس مناسب برای لایه های اکتشافی، لایه ها وزن دهی شدند و نقشة پتانسیل یابی فلز مس بدست آمد. نتایج حاصل نشان داد روش تحلیل سلسله مراتبی (AHP) در مقایسه با روش منطق فازی (Fuzzy-GAMMA) آنومالی های بیشتری را مشخص کرده و آنومالی های بدست آمده از این روش انطباق بیشتری با معادن مس موجود در منطقه نشان می دهد.

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