Detail publikace

Dam Break Modeling in a Cascade of Small EarthenDams: Case Study of the Cizina River in the Czech Republic

ŘÍHA, J. KOTAŠKA, S. PETRULA, L.

Originální název

Dam Break Modeling in a Cascade of Small EarthenDams: Case Study of the Cizina River in the Czech Republic

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Failures of small dams can pose a serious threat to people and property even if the size of the schemes is relatively low. In many cases, small dams are situated in a cascade along streams, meaning that the failure of the uppermost dam may cause the dams downstream to fail. In this paper, a cascade of three small reservoirs, Lichnov II (14.6 m high), Lichnov III (10 m high), and Pochen (8.5 m high), is the subject of the dam break analyses carried out via various methods such as empirical formulae, analogy, and hydraulic modeling. The dam-break flood routing was simulated using a shallow water flow hydraulic model. The simulations confirm that the attenuation effect of the peak discharge is governed by the flood volume, slope, and morphology of the floodplain and increases with the distance from the breached dam following an approximately exponential trend. When estimating peak discharge, empirical formulae derived for a single dam break should be applied carefully as they may underestimate the peak outflow by up to 10% in the case of a dam cascade. The attenuation volume of small reservoirs is small when compared to the flood volume, meaning that the attenuation of the peak discharge usually varies between 5–10%.

Klíčová slova

dam break; dam overtopping; internal erosion; cascade of dams; erodibility

Autoři

ŘÍHA, J.; KOTAŠKA, S.; PETRULA, L.

Vydáno

17. 8. 2020

Nakladatel

MDPI

Místo

Basel, Switzerland

ISSN

2073-4441

Periodikum

Water

Ročník

12

Číslo

8

Stát

Švýcarská konfederace

Strany od

1

Strany do

21

Strany počet

21

URL

https://www.mdpi.com/2073-4441/12/8/2309

Plný text v Digitální knihovně

http://hdl.handle.net/11012/194870

BibTex

@article{BUT164787,
  author="Jaromír {Říha} and Stanislav {Kotaška} and Lubomír {Petrula}",
  title="Dam Break Modeling in a Cascade of Small EarthenDams: Case Study of the Cizina River in the Czech Republic",
  journal="Water",
  year="2020",
  volume="12",
  number="8",
  pages="1--21",
  doi="10.3390/w12082309",
  issn="2073-4441",
  url="https://www.mdpi.com/2073-4441/12/8/2309"
}