3 results listed
In designing flood protection structures, to make flood flow calculations with the appropriate methods has both technological and societal important. Flood discahrges with different repetition intervals can be calculated both by using the current (flow) observation station data and the precipitation observation station data. In this study, both data set were evaluated and the results were correlated each other. Firstly (Model 1), based on the 38-year flow data of Bartın River (Kocaırmak), the probable flood discharges were calculated by using Normal, Gumbel, Log Normal and Pearson statistical methods. Secondly (Model 2), calculations were made with the help of Mockus and DSI methods based on the data of precipitation observation stations. In model 2, as a result of calculations made with normal Normal distribution, Gumbel distribution, Log Normal distribution and Pearson distribution functions, the flood discharges according to 50 year repetition were determined as 926 m3/sec, 1579 m3/sec, 1128 m3/sec, and 1024 m3/sec, respectively. Also in the calculations made with the help of Mockus and DSI methods in model 2, the flood discharges in the 50 year return interval were calculated as 999 m3/sec and 1305 m3/sec, respectively. By comparing the consistency of results obtained from Model 1 and Model 2, it was found that the long term data sets of precipitation as well as river flow data is contributing a significant part in designing the flood protection measures.
International Science and Engineering Application Symposium on Hazards
ISESH
Tülay Ekemen Keskin
Emrah Doğan
Hatice Betül Umarusman
Pınar Spor
Meisam Badfar
Shanmugam Packialakshmi
Dam-break floods are in a different position in comparison with the other types of flood due to its great negative consequences. Analysis of dam-break floods is crucial to reducing threats of potential dam failures. In this study it is aimed defining and assessment of risky zones at Kirazdere (Yuvacık) Dam downstream area through as a result of possible dam failure. In this aim, digital map datas of Kirazdere (Yuvacık) Dam and downstream area were arranged at GIS software and three-dimension (3d) terrain model was achieved for dam-break flood modelling. Using that 3d area model and USACE HEC RAS software, dam breach parameters that are suitable for dam breach scenario were obtained then it was analysed dam break flood at study area. Result of study, it was obtained dam-break flood wave propagation maps (depth maps, velocity maps, inundation maps), dam-break flood wave route and hidrographs that it will be composed after a possible dam failure at Kirazdere Dam and it was defined risky zone at downstream area of Kirazdere (Yuvacık) Dam.
International Science and Engineering Application Symposium on Hazards
ISESH
Hüseyin ALPPAY
Emrah Doğan
Due to climate change in our country, it is observed increase in the number of natural disasters (sudden and heavy rains, floods, storms and hoses et al.) every year. These disasters cause loss of life and damage. It is known much more the cost of economic damage caused by floods and floods than cost of prevention and improvement in advance. Low cost measures to be taken in advance provides reduction in material losses while minimization of flood probability. In this study comparison was made costs of the losses in the houses after the flood with project announced before flood. As a result, it was observed that improvement project cost double more than damage costs incurred in only 38 residences.
International Science and Engineering Application Symposium on Hazards
ISESH
Esra Dobrucalı
Osman Sönmez
Emrah Doğan