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Van den Berg, A. (author)Model simulations on the basis of uniform (non-graded) sediment reveal a strong overestimation of the scour hole in the area directly to west of Maasvlakte I when compared to the measured scour hole. Data analysis shows that the scour hole developed in a former complex estuarine system. The analysis strongly suggests that erosion occurred...master thesis 2007
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Louwersheimer, W.F. (author), Verhagen, H.J. (author), Olthof, J. (author)During the construction of the first Dutch offshore wind farm prototype measurements were performed. These measurements were aimed to monitor the behaviour of the granular filter layer of the scour protection around the mono-piles upon which the wind turbines are founded. These measurements were compared to scale model test results and...conference paper 2007
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- Gent, M.R.A. van (author), Coeveld, E.M. (author) report 2007
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Roubos, A. (author), Verhagen, H.J. (author)Design formulas for bed protections in the port of Rotterdam were investigated. Using depthsoundings, the actual level of stability of a quay wall can be compared with the design formulas. The loads on a bottom protection differ, because of diversity in shipping and tidal motion. Therefore a better comparison can be made by resembling the...conference paper 2007
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Zhu, Y. (author)Numerous flood disasters occur every year worldwide, mostly resulting from failure of dikes, some with catastrophic outcomes. Examples are the dike failures along the Yangtze River in China in 1931 due to heavy rainstorms and those in the Netherlands in 1953 due to a storm surge at the North Sea. Both floods induced many deaths and enormous...doctoral thesis 2006
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Van Duivendijk, J. (author)Keynote lecture at the ICSE2006. Various types of scour can confront the engineer, who has to design and construct a hydraulic structure in a marine environment. The engineer is interested in the magnitude of the scour to be expected and its development in time. He hopes that such information, if at all available, is accurate and that he can...conference paper 2006
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- Verheij, H.J. (author), Mosselman, E. (author), Stolker, C. (author) report 2004
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Schokking, L.A. (author), Janssen, P.C. (author), Verhagen, H.J. (author)The stability of stones in propeller-induced jet wash is still difficult to predict. Especially the trend of bowthrusters increasing in size and power in sea going ships (especially ferries) over the last years may be a reason for concern when dealing with the protection of slopes and beds. But also ships used in inland navigation are using...journal article 2003
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Li, Y. (author)The severity and location of bank erosion and bed scour changes with the variation of water level. At low flows, the main flow thread tends to follow the concave bank. As the discharge increases, the flow tends to cut across the convex bar, to concentrate against concave bank only downstream the bend apex. This change of flow pattern is...report 2002
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Hoffmans, G.J.C.M. (author), Den Adel, H. (author), Verheij, H.J. (author)Scour is a natural phenomenon caused by the flow of water in rivers and streams and occurs as a part of the morphological changes caused by rivers or as a result of man-made structures. For the Dutch Delta Works hydraulic structures were often constructed on fines with loose packing. To guarantee the geotechnical stability of these structures...report 2000
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- Rijn, L.C. van (author), Wang, Z.B. (author) report 1999
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Feenstra, T.D.S. (author)De laaggelegen delen van Nederland en de gebieden langs de rivieren worden tegen hoog water beschennd met een stelsel van waterkeringen, waaronder dijken. Over dijkbouw is veel bekend, maar over het bezwijken van een dijk veel minder. Dit is wel een steeds belangrijker wordend onderwerp. In de probabilistiek wordt met het mogelijk falen van een...master thesis 1999
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- Tulp, L. (author) report 1998
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Juhl, J. (author), Archetti, R. (author)Local scour can occur at a breakwater constructed on a sandy seabed and may endanger the overall stability due to sliding of the main armour layer if the toe and scour protection is failing. The scouring pattern is a function of the water depth, wave conditions, sediment characteristics, and breakwater configuration and reflection...report 1997
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- Verheij, H.J. (author), Klomp, W.H.G. (author) report 1996
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Hoffmans, G.J.C.M. (author)Het doel van het handboek ontgrondingen is een antwoord te geven op ontgrondingsvraagstukken zoals een ontwerper van waterbouwkundige constructies die tegenkomt. Verschillende deelstudies worden voor het afronden van dit handboek uitgevoerd. Het verifiëren van ontgrondingsformuies staat centraal in deze studies. Hier is de voorspellingskracht...report 1995
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Hoffmans, G.J.C.M. (author)Het doel van het handboek ontgrondingen is een antwoord te geven op ontgrondingsvraagstukken zoals een ontwerper van waterbouwkundige constructies die tegenkomt. Verschillende deelstudies worden voor het afronden van dit handboek uitgevoerd. Het verifiëren van ontgrondingsformules staat centraal in deze studies. Hier is de voorspellingskracht...report 1995
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Hoffmans, G.J.C.M. (author)Het handboek ontgrondingen beoogt een instrument te zijn om de grootte van lokale ontgrondingskuilen rondom brugpijlers, kribben, achter drempels met of zonder bodembescherming, uitlaatconstructies, strandmuren, strandhoofden, etc. te voorspellen. Met het handboek kunnen ontwerpers en adviseurs een eerste schatting van het ontgrondingsproces...report 1994
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Fahlbusch, F.E. (author)Because of the potential risk of undermining foundations, adequate control of scour is an integral part of dam safety for both new and existing dams. Repair of damage caused by high energy jets can be extensive and costly, therefore enhancing understanding of the scour mechanism and improved methods for predicting plunge pool size is of...report 1994
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Hoffmans, G.J.C.M. (author)Scour is a natural phenomenon caused by the flow of water in rivers and streams. Scour occurs naturally as part of the morphological changes of rivers and as result of structures man-made. Several types of scour can be distinghuished. Experience has shown that due to sand or flow slides or micro instabilities at the end of the bed protection,...report 1993