Breaching of earth embankments and dams
Morris, Mark William
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Despite 'modern' construction and management techniques, flood embankment and embankment dam failures occur almost routinely around the world. The need to understand,predict and prevent the breaching process remains a high priority for owners and flood riskmanagers alike. This research provides new understanding and improved methods for predicting breach initiation and growth through earth flood embankments or dams.The improvement of breach model accuracy has made slow progress over the past 20 years,with confusion around breaching processes arising from a lack of appreciation of soil mechanicsinteracting with hydraulics and structural behaviour. The prediction of different breachprocesses requires the integration of techniques from all three disciplines.This thesis makes advances from earlier work (Mohamed, 2002) to produce a predictive breachmodel intended for industry application. The research develops improved approaches for flowcalculation, sediment erosion and structural response for predicting breach initiation and growthand uses field data, including video footage, from the EU IMP ACT project and large scale testand case study data from collaboration with the International Dam Safety Interest Group breachmodelling project.