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Fakulteta za gradbeništvo in geodezijo, Ljubljana (FGGLJ)
  • Considering the effects of human activities in flood hazard assessment
    Rak, Gašper ; Steinman, Franci
    Increasing trend of a frequency and intensity of flood phenomenon and also even more frequent human encroachment in a water-corridors and floodplains are main reasons for flood being one of most ... serious disaster. For more effective flood hazard and risk management the European Union adopted Flood Directive in 2007, on base of which all EU nations prepared legislation on the methodology for determination of flood hazard and risk areas. Classification of flood areas is taking into account several criterions and flood hazard assessment for high water scenarios with different return periods. Despite important anthropogenic influences and their impact on flood hazards, legislation on the process of flood hazards mapping usually does not obligate to consider anthropogenically induced scenarios that occur during extreme and extraordinary events like embankment breaching or failure of other flood protection measures, irregular or limited operation of the hydro mechanical equipment at hydraulic structures etc. As important human influence should also be considered the stochastic land-use changes in line with economic, environmental and social interests. To reduce the risk in flood prone areas, infrastructure facilities, such as embankments, etc., are being planned as mitigation measures. Such measures can change the runoff regime and divert the hazard of flooding to other areas. Moreover, construction of levees changes the retention capacity of floodplains areas, which can have a significant impact on the peak attenuation and propagation time extension of flood waves and consequently on the flood safety of the downstream areas. The article presents introducing of exceptional events analysis in flood hazard and risk assessment, with different examples of direct and indirect human-induced extreme flood events, analysed with detailed hydraulic modelling.
    Vir: Book of abstracts of the 15th International Symposium Water Management and Hydraulics Engineering, September 6th - 8th, 2017, Primošten, Croatia (Str. 42)
    Vrsta gradiva - prispevek na konferenci
    Leto - 2017
    Jezik - angleški
    COBISS.SI-ID - 8168545

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