4050

3828

كارشناسي ارشد

آبياري و زهكشي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي

1386

يازده، 108، [II] ص.: مصور، جدول،نمودار

ص.ع. به: فارسي و انگليسي

سعيد اسلاميان

منوچهر حيدرپور، عليرضا سفيانيان

18/04/87

جهانگير عابدي، شمس الله ايوبي

مهندسي كشاورزي

ID3828

به فارسي و انگليسي: قابل رؤيت در نسخه ديجتال

AbstractNecessity of water has caused human residence around the rivers Therefore from thepast years in order to flood defense human has tried to minimize flood destructions Flood zoning for determining a safe and specific region for agriculture activities thesuitable urban and rural regions are important and it can be an effective factor forreducing flood hazards In this research for investigating the potential of HEC RAS andARC VIEW software s in flood zoning the Plasjan river in Zayandehrood watershed wasselected Therefore after providing the maps with scale of 1 1000 from this region regarding instruction of flood zoning maps 55 sections in 7 4 kilometers of river reachwere selected After collecting hydrologic information of the region Manningroughness coefficient was determined through Chow table and engineering judgment Finally by HEC RAS and ARC VIEW software s the required steps were performed andthe maps of flood elevation and area for different return periods of 5 10 25 50 100 and200 year have been provided The study results show that this software has a relativelyhigh accuracy in providing flood zoning maps and 5 estimate error of HEC RAS insimulating water surface also confirms this accuracy Considering the changes of 20percent in roughness coefficient on water depth in different return periods indicates that the parameter has not the significant effects on the water depth and changes in depth arerelatively independent from the roughness coefficient Therefore using the HEC RAS flood zoning maps were prepared with the highest accuracy

سعيد اسلاميان

منوچهر حيدرپور، عليرضا سفيانيان

جهانگير عابدي، شمس الله ايوبي