Increasing of floods durations and level in Tisza valley as the main impact on the stability of hydraulic

Horváth, Lajos and Kovács, Sándor (2021) Increasing of floods durations and level in Tisza valley as the main impact on the stability of hydraulic. KATONAI LOGISZTIKA, 29 (3-4). pp. 230-247. ISSN 1588-4228

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Abstract

In this article, the authors present in detail the reasons for the rising of flood waves in the Tisza Valley as one of the most determining ele- ments of the failure of hydraulic structures. Decreasing of river’s flood conveyance and increasing of flood waves were observed in the Tisza River Valley. As water levels rise, their time duration significantly in- creased, with the combined effect of severe stress on structures built more than a hundred years ago. Changes in the frequency of flood waves observed since the onset of water level observations analyzed separately. The authors analyze separately the changes in the for- mation and run-off of the flood waves since the beginning of the obser- vation of the water level of our rivers. The document in detail analyses of the reasons for the filling of the floodplain, and the growth of the point bars. The article briefly describes the procedures for recalculating the relevant flood design water levels based on probability theory and hy- drodynamic methods.

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