کاهش سیلاب در حوضه‏ های شهری با استفاده از LID- BMPS در مدل SWMM و انتخاب گزینۀ برتر با روش AHP- TOPSIS (مطالعۀ موردی: منطقۀ شهرک گلستان سمنان)

نوع مقاله : پژوهشی


1 دانشجوی کارشناسی ارشد مهندسی آب و سازه ‏های هیدرولیکی، دانشکدۀ عمران دانشگاه سمنان

2 استادیار گروه مهندسی آب و سازه ‏های هیدرولیکی، دانشکدۀ عمران دانشگاه سمنان

3 دانشیار گروه مهندسی آب و سازه ‏های هیدرولیکی، دانشکدۀ عمران دانشگاه سمنان

4 استادیار مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان سمنان


با گذشت زمان و پیشرفت تمدن، دسترسی به منابع آب باکیفیت و کافی به منظور تأمین نیازهای جوامع انسانی بسیار مهم است. با افزایش سطوح نفوذناپذیر در مناطق شهری و مخاطرات سیلاب ناشی از آن، دیدگاه نوین روش‏های مدیریتLID- BMPS، برای به‏کارگیری رواناب سطحی، کاهش دبی پیک و جلوگیری از سیلاب در حوضه‏های شهری روی مناطق توسعه‏یافته یا در حال توسعه مورد توجه قرار گرفته ‏است. در پژوهش حاضر، تأثیر اصلاح ابعاد کانال، طراحی مخزن برای کنترل سیلاب و تأمین آب مورد نیاز فضای سبز منطقه و استفاده از تأسیسات LID شامل اجرای 100 درصد روسازی نفوذپذیر برای سطح پیاده‏روها و بشکه‏های باران در دو حالت (استفاده از 100 درصد سطح پشت‏بام و استفاده از 50 درصد سطح پشت‏بام) روی کاهش دبی اوج و حجم سیلاب 12 زیرحوضه در محدودۀ مطالعاتی شهرک گلستان واقع در شهر سمنان با مدل SWMM ارزیابی شد. در نهایت، با استفاده از روش AHP- TOPSIS،بشکه‏های باران (استفاده از 50 درصد سطح پشت‏بام)، با حدود 81 درصد کاهش دبی پیک سیلاب برای دورۀ بازگشت طراحی 5 سال و 78 درصد کاهش دبی پیک سیلاب برای دورۀ بازگشت طراحی 10 سال، رتبۀ نخست و اصلاح ابعاد کانال، آخرین رتبه را به خود اختصاص داده‏‏اند.


عنوان مقاله [English]

Flood Reduction in Urban Basins Using LID- BMPs IN SWMM Model and Selecting The Best Option With AHP- TOPSIS (Case Study: Golestan Area in Semnan)

نویسندگان [English]

  • Seyedeh Zahra Miremadi 1
  • Hojat Karami 2
  • Khosrow Hosseini 3
  • Sayed Ali Asghar Hashemi 4
1 M.Sc Student, Department of Water Engineering and Hydraulic Structures, Faculty of Civil Engineering, Semnan University, Semnan, Iran
2 Assistant Professor, Department of Water Engineering and Hydraulic Structures, Faculty of Civil Engineering, Semnan University, Semnan, Iran
3 Associate Professor, Department of Water Engineering and Hydraulic Structures, Faculty of Civil Engineering, Semnan University, Semnan, Iran
4 Assistant Professor, Agriculture and Natural Resources Research and Education Center of Semnan, Semnan, Iran
چکیده [English]

With the passage of time and progress of civilizations, access to sufficient and high-quality water resources in order to provide the needs of human societies, becomes ever more important. With increasing impenetrable surfaces in urban areas and its resulting flood hazards, the new prespective of management methods of LID- BMPS has been considered in order to use surface run-off, decreasing peak discharge and preventing floods in urban areas on developed or developing parts. In this research, the effect of correction of channel dimensions, reservoir design for flood control and provision of required water for the green area and the use of LID facilities including implementation 100% of  permeable pavement for sidewalk areas and rain barrels in two conditions (using 100% of the surface of the roof) and (using 50% of the surface of the roof) on decreasing peak discharge and the volume of flooding 12 sub-basing in the study area of Golestan settlement in Semnan city was evaluated using SWMM model. Finally, by using AHP- TOPSIS methods, rain barrels (using 50% of the surface of the roof) with about 81% reduction of peak discharge flood for the return period of deasining 5 year and 78% reduction of peak discharge flood for the return period of designing 10 years have been allocated themselves the first and the last rank of correction of channel dimensions.

کلیدواژه‌ها [English]

  • LID- BMPS methods
  • Reduce flood
  • SWMM
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