STRUCTURAL FLOOD ANALYSIS BASED ON THE HYDRAULIC MODEL OF THE KÜÇÜK AKSU RIVER

Yıl 2022, , 1084 - 1096, 30.09.2022

Tahsin Baykal , Özlem Terzi , Erhan Şener

https://doi.org/10.21923/jesd.1099665

Cited By: 1

Öz

In this study, flood risk areas were determined with Hec-RAS hydraulic model for the Küçük Aksu River in Antalya, Turkey. Firstly, Hec-RAS models were developed according to different recurrence flow rates and, flood propagation maps and flood depth maps were generated. As a result of the model that was developed by using a 100-year flood recurrence flow rate, it was seen that 6.04 ha of the residential area and 33.73 ha of the agricultural area is submerged. The maximum water level was determined as 11.60 m according to the 100-year flood recurrence flow rate. Then, structural flood analysis was performed using the depth-damage graph for the Küçük Aksu River. As a result of this analysis, it was seen that the economic loss caused by floods was between 1.152 million-1.946 million TL.

Anahtar Kelimeler

Flood risk analysis, Hec-RAS, structual flood analysis, Küçük Aksu River, GIS

Destekleyen Kurum

Scientific Research Projects unit of Suleyman Demirel University

Proje Numarası

4236-YL1-14

Teşekkür

This study was carried out within the scope of the project numbered 4236-YL1-14, which was supported by the Scientific Research Projects unit of Suleyman Demirel University, “Flood Risk Analysis with Geographic Information Systems Based Hydraulic Model and Multi-Criteria Decision-Making Analysis: Case of Small Aksu Stream”.

KÜÇÜK AKSU ÇAYI’NDA HIDROLIK MODELE DAYALI YAPISAL TAŞKIN ANALİZİ

Öz

Bu çalışmada, Antalya ilinde bulunan Küçük Aksu Çayı’nda Hec-RAS ile taşkın riski olan alanlar belirlenmiştir. İlk olarak, farklı tekerrür debilerine göre Hec-RAS modelleri geliştirilmiş ve taşkın yayılım haritaları ile taşkın derinlik haritaları oluşturulmuştur. 100 yıllık taşkın tekerrür debisi kullanılarak geliştirilen model sonucunda 6,04 ha yerleşim alanı ile 33,73 ha tarım alanının su altında kaldığı görülmüştür. 100 yıllık taşkın tekerrür debisine karşılık gelen maksimum su yüksekliği 11,60 m olarak saptanmıştır. Daha sonra derinlik-hasar grafiği yardımıyla Küçük Aksu Çayı için yapısal taşkın analizi yapılmıştır. Yapılan analiz sonucunda taşkınların neden olduğu ekonomik kaybın 1.152 milyon-1.946 milyon TL arasında olduğu görülmüştür.

Anahtar Kelimeler

Taşkın risk analizi, Hec-RAS, yapısal taşkın analizi, Küçük Aksu Çayı, CBS

Proje Numarası

4236-YL1-14

Kaynakça

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