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


Oguzhan S., ÖZGENÇ AKSOY A.

JOURNAL OF HYDROLOGY AND HYDROMECHANICS, vol.68, no.3, pp.231-241, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 68 Issue: 3
  • Publication Date: 2020
  • Doi Number: 10.2478/johh-2020-0026
  • Journal Name: JOURNAL OF HYDROLOGY AND HYDROMECHANICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Agricultural & Environmental Science Database, Applied Science & Technology Source, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Compendex, Environment Index, Geobase, Pollution Abstracts, Directory of Open Access Journals, Civil Engineering Abstracts
  • Page Numbers: pp.231-241
  • Keywords: Dam break, Flood wave, Physical model, Urkmez Dam, Vegetation effect, NUMERICAL-SIMULATION
  • Dokuz Eylül University Affiliated: Yes

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 Urkmez 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.