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Zhao, G. (author), Visser, P.J. (author), Peeters, P. (author)Embankment breaching is a composite process coupled by hydraulic processes and sediment transport processes. Erosion is the link in the interaction between breach flow and embankment material. Surface erosion starts in the initial breach phase and triggers the initial damage of the embankment. As the surface erosion develops completely, the...report 2014
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Tettero, M. (author)The Netherlands is not well protected against flooding and limited budget it available for improvements. Therefore, this research investigates in what way the cost-effectiveness of Dutch flood protection can be improved with the use of multifunctional unbreachable dykes. The multifunctional unbreachable dyke, a dyke combined with additional user...report 2013
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Morales, W.F. (author), Laue, J. (author), Springman, S.M. (author)Correct scaling of breach analysis of river levees is a challenging task that is not easily accomplished by physical modelling. Several small-scale physical model tests have been conducted at 1-g level, which cannot truly represent the stress-dependency of soils, whereas the scaling issues arising from centrifuge modelling have not been fully...conference paper 2012
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Giardino, A. (author), Santinelli, G. (author), Bruens, A. (author)Over more than a thousand years, the Dutch coast has been eroding for large stretches. Coastal retreat puts coastal functions (e.g. safety against flooding) under pressure. Since 1990, the Dutch policy aims at preventing further retreat of the coastline, but in the meantime taking the valuable dynamical behaviour of the coast into account....report 2012
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Zhu, Y. (author), Visser, P.J. (author), Vrijling, J.K. (author), Wang, G.Q. (author)Breaching of embankments has recently drawn more and more attention due to its importance in the development of early warning systems for embankment failures, in the evacuation plans of people at risk, in the design method of embankments based on a risk-approach, etc. The erosion process observed during embankment breaching tests in the...journal article 2011
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Peeters, P. (author), Van Hoestenberghe, T. (author), Vincke, L. (author), Visser, P.J. (author)The use of breach models includes two tasks: predicting breach characteristics and estimating flow through the breach. Strengths and weaknesses as well as opportunities and threats of different simplified and detailed physically-based breach models are listed following theoretical and practical criteria. According to the theoretical criteria,...conference paper 2011
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- van Rhee, C. (author) conference paper 2010
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Morris, M. (author)During the IMPACT Project a number of large scale field tests were undertaken in Norway to collect data, including extensive video footage, recording the physical processes that occured during the initiation and growth of breach through the test embankments. The video footage has been carefully analysed and key processes identified, to support...report 2009
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Schweckendiek, T. (author), Van den Ham, G.A. (author), De Groot, M.B. (author), De Gijt, J.G. (author), Hudig, P. (author), Brassinga, H.E. (author)A recently reclaimed site in the Port of Rotterdam will serve as location and foundation of an LNG terminal. LNG (Liquefied Natural Gas) is recognized as hazardous material and underlies strict safety requirements. As part of the safety assessment of the entire installation, a specific analysis had to be carried out concerning the geotechnical...conference paper 2009
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Van Baars, S. (author), Van Kempen, I.M. (author)In a historical perspective, flood protection in the past was not given high priority - plague and periods of famine and war took precedence. Poverty and a lack of knowledge made it difficult to create safer dikes. Dike engineering did improve in Napoleonic era due to the French Central Government, but many dikes still failed. A historical...journal article 2009
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Stanczak, G. (author)Sea dikes are of crucial importance in the defence systems of low-lying coastal areas in Germany as well as in other countries such as The Netherlands and Denmark. Breaches of sea dikes due to storm surges are regarded as the main cause of flood disasters, so that a reliable prediction of both breach initiation, breach formation and breach...report 2009
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Boukalova, Z.; Benes, V. (author)More than 500,000 km of embankment are used in Europe for transport and flood defence, representing a 1bn infrastructure asset base, which supports and protects the economy of Europe (e.g. property worth some 2,000 bn is protected from flooding.) Presently the state and performance of these embankments can only be investigated visually or by...report 2009
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Morris, M. (author)This report provides an overview of the technical work undertaken by the partners under FLOODsite Task 6. The research in Task 6 addresses breach initiation and growth. Research was undertaken to (i) investigate and develop preliminary models for predicting wave induced breach initiation (ii) investigate soil processes, review and refine the HR...report 2009
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Morris, M. (author), Hassan, M. (author), Kortenhaus, A. (author), Visser, P. (author)This report provides an overview of the state of the art with regards to embankment breach initiation and formation processes. Basic breach formation processes are explained, including a review of commonly held misconceptions. The different stages of breach initiation and formation are also explained, along with the varying needs of different...report 2009
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Hassan, M. (author)The IMPACT Project (www.impact-project.net) provided valuable data on breach formation processes. Five large scale field tests were performed in Norway, and a further 22 laboratory tests were performed in the UK. A review of this data has been undertaken to support breach model testing and development under Task 6.report 2009
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Roca Collell, M.; Morris, M. (author)Erosion of surface vegetation of fluvial and coastal embankments is the first step in the breach initiation process for an embankment. Detailed knowledge of the driving forces, factors and erosion mechanisms is required to understand and manage the failure risk. Past and present research on the erosion of surface vegetation has been reviewed and...report 2009
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Geisenhainer, P. (author)This report describes small-scaled experiments performed at Leichtweiß-Institute for Hydraulic Engineering and Water Resources, Technical University Braunschweig (LWI). The experiments have been conducted to investigate the development of dike breaches in homogeneous sand dikes with and without a clay layer. The used scaling factor was 1:10.The...report 2009
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Geisenhainer, P. (author)Description of the performance of the large-scale experiments in the GWK in Hannover in 2008report 2009
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Buijs, F. (author)The aim of this research was to investigate the influence of holes in the grass turf on the failure mechanisms and reliability analysis of dikes. The shape of the holes is either caused by a foreign object, a superficial void in the grass turf or a larger hole caused by for example animal burrowing or vandalism.report 2009
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Young, M. (author)This MSc thesis details the investigation of grass cover performance in relation to wave overtopping processes. Failure modes for grass cover are considered and developedreport 2009