نوع مقاله : پژوهشی

نویسندگان

1 گروه مهندسی طبیعت، دانشکده منابع طبیعی و محیط زیست، دانشگاه ملایر، ملایر، ایران

2 استاد گروه مهندسی طبیعت ، دانشکده منابع طبیعی و محیط زیست ، دانشگاه ملایر ، ملایر ، ایران

3 گروه مهندسی طبیعت، دانشگاه ملایر

چکیده

در این پژوهش گره‌های سیل‌گیر شبکه زهکشی در حوضه شهری خاکو (فقیره – خضر) همدان با ‌استفاده از مدل SWMM واسنجی و ارزیابی شد. نتایج نشان داد مقادیر نفوذ و ارتفاع رواناب بارش طرح در روش SCS به ترتیب برابر 86/50 و 14/16 میلی‌متر می‌باشد و بیانگر این است که روش SCS مقادیر نفوذ و رواناب را برای آبخیز شهری ‌همدان دقیق‌تر ارزیابی نموده واز کارایی قابل قبولی برخوردار است‌. نتایج نشان می‌دهد که از کل بارش‌120 میلی‌متری، مقدار 33 میلی‌متر مربوط به تلفات نفوذ و 87 میلی‌متر مربوط به رواناب سطحی بوده‌ و حجم جریان معادل 41/2 میلیون مترمکعب می باشد که 98/1 میلیون مترمکعب مربوط به زیرحوضه فقیره ‌و 43/0 میلیون مترمکعب مربوط به زیرحوضه خضر است. با توجه به ضریب کارایی NS‌که برای دبی اوج 66/0‌و برای حجم سیلاب 73/0‌محاسبه شده و اعداد قابل قبولی است. نتایج نشان داد که بیشترین مقدار حجم رواناب بارش طرح با 28/1 میلیون متر مکعب مربوط به زیرحوضه فقیره به دلیل‌ توسعه فیزیکی شهر همدان در سال‌های اخیر در این زیرحوضه ‌و کمترین مقدار با 46/0میلیون مترمکعب مربوط به‌ زیر حوضه خضرخاکو است. نتایج این پژوهش نشان داد که کاربری‌های مسکونی بیشترین سهم را در پتانسیل سیل خیزی محدوده مطالعاتی دارد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Evaluation of flood control nodes of Hamadan drainage network using SWMM model

نویسندگان [English]

  • Sepideh siyooti 1
  • Alireza Ildoromi 2
  • Behnoosh Farrokhzadeh 3

1 Natural Engineering, Faculty of Natural Resources and Environment, Malayer University, Malayer, Iran.

2 Professor of Natural Engineering Department, Faculty of Natural Resources and Environment, Malayer University, Malayer, Iran

3 Natural Engineering, Faculty of Natural Resources and Environment, Malayer University, Malayer, Iran.

چکیده [English]

In this research, the flood-blocking nodes of the drainage network in Khako (Faqira-Khidr) urban basin of Hamedan were measured and evaluated using the SWMM model. The results showed that the infiltration and runoff height of the project in the SCS method are equal to 50.86 and 16.14 mm, respectively, and this indicates that the SCS method is a more accurate assessment of the infiltration and runoff values ​​for the Hamadan urban watershed. and has an acceptable efficiency. The results show that out of the total rainfall of 120 mm, 33 mm is related to infiltration losses and 87 mm is related to surface runoff, and the flow volume is equal to 2.41 million cubic meters, which is 1.98 1 million cubic meters is related to Faqireh sub-basin and 0.43 million cubic meters is related to Khizr sub-basin. According to the efficiency coefficient of NS, which is calculated as 0.66 for the peak discharge and 0.73 for the flood volume, and these numbers are acceptable. The results showed that the highest volume of rainfall runoff of the project with 1.28 million cubic meters is related to Faqirah sub-basin due to the physical development of Hamedan city in recent years in this sub-basin and the lowest amount with 0.46 million cubic meters is related to the sub-basin. It is Khedrkhako. The results of this research showed that residential uses have the largest share in the flood potential of the study area.

کلیدواژه‌ها [English]

  • rainfall-runoff modeling
  • SWMM model
  • urban watershed
  • SCS method
  • Hamadan city
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