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Verheij, H.J. (author), Hoffmans, G. (author), Dorst, K. (author), Van de Sande, S. (author)Granular filters are used for protection of structures against scour and erosion. For a proper functioning it is necessary that the interfaces between the filter structure, the subsoil and the water flowing above the filter structure are stable. Stability means that there is no transport of subsoil material through the filter to the water above...conference paper 2012
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Verheij, H.J. (author), Hoffmans, G. (author), Den Adel, H. (author), Akkerman, G.J. (author), Giri, S. (author)A desk study has been carried out regarding interface stability of granular filter structures. Actually, the project focuses on two particular aspects: (1) interface stability as function of the thickness of the filter layer consisting of standard armourstone gradings, and (2) interface stability of gravel mixtures with a wide gradation The...report 2009
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Hoffmans, G.J.C.M. (author)In the Netherlands hydraulic engineering structures are not only designed, but are also managed and maintained (M&M). In the nineteen-nineties in the United States during periods of high water scores of bridges collapsed, because American law forbids the use of bed protection around bridge piers and moreover, no maintenance plans were available....report 2006
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- Mosselman, E. (author), Akkerman, G.J. (author), Verheij, H.J. (author), Hoffmans, G.J.C.M. (author), Jongeling, T.H.G. (author), Petit, H.A.H. (author) report 2000