Coastal Structures and Solutions to Coastal Disasters Joint Conference 2015
Rock Slopes on Top of Sand: Modelling of Open Filters under Wave Loading
Publication: Coastal Structures and Solutions to Coastal Disasters 2015: Resilient Coastal Communities
ABSTRACT
Permeable coastal structures typically contain granular filters in one or more layers. These filters are normally geometrically tight to prevent material washout. A cheaper alternative is a geometrically open filter where only minimal base material loss or settlement occurs. In Van Gent and Wolters (2015) physical model tests were performed to estimate the amount of erosion and accretion of sand underneath one or two layers of rock. Here, a numerical model has been applied to compute hydraulic gradients at the internal sand-rock interface for conditions in which the structure is exposed to wave action. The results show that the model can accurately compute hydraulic gradients at the internal rock-sand interface and that the position of erosion and accretion of sand can be predicted. The performed parameter analysis shows which parameters affect the hydraulic gradients and which parameters do not. Moreover, processes that contribute to erosion and accretion have been analysed.
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ACKNOWLEDGEMENTS
Partners of the Joint-Industry-Project Coastal Foam project are acknowledged for their interest in the performed research. Also the co-funding by TKI Dynamics of hydraulic structures (Delta Technology) is acknowledged.
REFERENCES
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Information & Authors
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Published In
Coastal Structures and Solutions to Coastal Disasters 2015: Resilient Coastal Communities
Pages: 817 - 827
Editors: Louise Wallendorf, U.S. Naval Academy and Daniel T. Cox, Ph.D., Oregon State University
ISBN (Online): 978-0-7844-8030-4
Copyright
© 2017 American Society of Civil Engineers.
History
Published online: Jul 11, 2017
Published in print: Jul 11, 2017
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