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Experimental investigation of the effect of vegetation on dam break flood waves

Authors
  • Oguzhan, Semire1
  • Aksoy, Aysegul Ozgenc1
  • 1 Dokuz Eylul University, Tinaztepe Campus, 35160, Buca , (Turkey)
Type
Published Article
Journal
Journal of Hydrology and Hydromechanics
Publisher
Sciendo
Publication Date
Aug 10, 2020
Volume
68
Issue
3
Pages
231–241
Identifiers
DOI: 10.2478/johh-2020-0026
Source
De Gruyter
Keywords
License
Green

Abstract

Dams have an important role in the industrial development of countries. Irrespective of the reason for dam break, the flood can cause devastating disasters with loss of life and property especially in densely populated areas. In this study, the effects of the vegetation on the flood wave propagation in case of dam break were investigated experimentally by using the distorted physical model of Ürkmez Dam. The horizontal and vertical scales of the distorted physical model are 1/150 and 1/30, respectively. The dam break scenarios were achieved by means of a gate of rectangular and triangular shape. The results obtained from experiments performed with vegetation were compared and interpreted with those obtained from experiments at which the vegetation configuration was absent. The analysis of the experimental data showed that the presence of vegetation causes a significant decrease in water depths as the flood wave propagates to the downstream and greatly reduces its impact on the settlements. It is also revealed that dam break shape plays an important role in temporal variation of flood wave.

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