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Novel Method to Assess the Risk of Dam Failure

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  • Miklas Scholz

    ()
    (Civil Engineering Research Centre, School of Computing, Science and Engineering, The University of Salford, Newton Building, Salford M5 4WT, UK
    Institute for Infrastructure and Environment, School of Engineering, The University of Edinburgh, William Rankine Building, Mayfield Road, The King’s Buildings, Edinburgh EH9 3JL, UK)

  • Qinli Yang

    ()
    (Institute for Infrastructure and Environment, School of Engineering, The University of Edinburgh, William Rankine Building, Mayfield Road, The King’s Buildings, Edinburgh EH9 3JL, UK)

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    Abstract

    A new flexible, rapid and affordable risk assessment procedure was developed and verified for dams based on case studies in Scotland (UK) and the region of Baden (Germany). A database of six different sustainable flood retention basin (SFRB) types with varying flood control potential has been developed. In Scotland, there are a relatively high number of current and former large drinking water reservoirs which could contribute to flood management control. In comparison, purpose-built and relatively small SFRB, which are predominantly used for flood control, dominate the landscape in Baden. Moreover, 13 out of 149 SFRB have recently been upgraded, and 11 new SFRB have been built since 2006. Both the estimated hazard and risk are small in comparison to those found in the flood infrastructure in Scotland. The study assesses a rapid screening tool developed to estimate the Dam Condition and the corresponding Dam Failure Hazard and Dam Failure Risk. Most SFRB in Baden have a relatively poor Dam Condition, high Dam Failure Hazard but low Dam Failure Risk compared to those in Scotland. Findings show that Baden is more advanced in flood defence management as well as adaptation to climate change. Deutscher Titel: Neue Methode zur Beurteilung des Risikos eines Dammbruches Zusammenfassung: Eine neue, flexible, schnelle und preisgünstige Methode zur Risokobeurteilung von Dämmen wurde entwickelt und getestet, die auf Fallbeispielen in Schottland (Vereinigtes Königreich) und der Region Baden (Deutschland) basiert. Eine Datenbank von sechs verschiedenen Typen nachhaltiger Hochwasserrückhaltebecken (NHRB) mit unterschiedlichem Hochwasserrückhaltevermögen wurde entwickelt. Eine relativ hohe Anzahl von gegenwärtigen und ehemaligen großen Trinkwassertalsperren, die zur Hochwasserschutzkontolle verwandt werden könnten, befinden sich in Schottland. Zweckmäßig gebaute und relativ kleine NHRB, die hauptsächlich für den Hochwasserschutz verwendet werden, dominieren hingegen die Landschaft in Baden. Darüber hinaus wurden 13 von 149 NHRB kürzlich renoviert und seit 2006 wurden 11 neue NHRB gebaut. Sowohl die geschätzte Gefahr als auch das Risiko sind im Vergleich zu den Parametern, die für die Hochwasserschutzinfrastruktur in Schottland gefunden worden sind, klein. Die Studie untersucht ein zeitsparendes Instrument zur Beurteilung des Dammzustandes, der Dammbruchgefahr und des Dammbruchrisikos. Die meisten NHRB in Baden haben relativ geringe Werte bezüglich des Dammzustandes, hohe Werte für Dammbruchgefahr und niedrige Werte bezüglich des Dammbruchrisikos im Vergleich zu NHRB in Schottland. Die Ergebnisse zeigen, dass Baden im Hochwasserschutz vorne liegt und daher dem Klimawechsel besser angepasst ist.

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    Bibliographic Info

    Article provided by MDPI, Open Access Journal in its journal Sustainability.

    Volume (Year): 3 (2011)
    Issue (Month): 11 (November)
    Pages: 2200-2216

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    Handle: RePEc:gam:jsusta:v:3:y:2011:i:11:p:2200-2216:d:14832

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    Related research

    Keywords: water resources management; dam condition; dam failure hazard; dam failure risk; reservoir; adaptation to climate change; classification system; safety;

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