Breach modelling: why, when and how?

Breach modelling: why, when and how?
Hassan, M.and Morris, M. and Goff, C.
In: ICOLD 2019, 8-14 June 2019, Ottawa, Canada. (2019)

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Abstract:Earthen dams and flood embankments are critical infrastructure that play a vital role for many purposes. However, the potential for failure by breaching carries severe consequences to the people and the assets they serve. It is therefore important to understand the potential failure processes and impacts that can be associated with such failures. An integral part of any thorough risk assessment process is the prediction or modelling of the breach processes. To date, three approaches to breach modelling exist, namely, parametric, semi-physically based and physically based models. This paper introduces and explains the advantages and disadvantages of each type of analysis. It also provides guidance for selecting the most appropriate method for common scenarios. An example of a physically based model (The EMBREA model) will also be described showing the significance of looking at the embankment design detail, the associated variations in failure processes and how this can significantly affect the consequences. An online version of EMBREA is also introduced which can be used by researchers and practitioners to accurately assess the risk of dam and/or embankment failure through overtopping or piping. The paper concludes by outlining the future direction of breach prediction methods globally with details on the current and planned research.
Item Type:Conference or Workshop Item (Paper)
Subjects:Floods > Flood impacts
Floods > Dams and reservoirs
ID Code:1754
Deposited On:20 Jun 2019 07:21
Last Modified:20 Jun 2019 07:21

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