TWO-DIMENSIONAL DAM BREAK ANALYSES OF BERDAN DAM

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Tezin Türü: Yüksek Lisans

Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Fen Bilimleri Enstitüsü, Fen Bilimleri Enstitüsü, Türkiye

Tezin Onay Tarihi: 2019

Tezin Dili: İngilizce

Öğrenci: ÇAĞLA IRMAK ÜNAL

Danışman: Zafer Bozkuş

Özet:

Dam break analyses of Berdan Dam were performed to determine the potential risk areas of floodplain and to help the preparation of emergency action plans. Digital elevation model created from bathymetric maps, flow hydrograph obtained for catastrophic condition, and sub-regions classified by land cover maps were integrated into HEC-RAS model. The reservoir of Berdan Dam and two-dimensional flow area was created on GIS-based geometric data which was converted from the digital elevation model to a triangulated irregular network. Breach parameters were calculated according to the selected dam breach mechanism. When all hydraulic and hydrological parameters were specified depending on variables and selected dam breach mechanism, simulations were run under piping and overtopping scenarios. Finally, the flood inundation maps were visualized on the digital elevation model with the help of RAS-Mapper in terms of depth, velocity, water surface elevation, and flood arrival time.