Author(s): G. J. Akkerman; J. G. Hillen; J. L. M. Konter; K. W. Pilarczyk
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Keywords: No Keywords
Abstract: The vertical closure method, in which a dam is raised more or less uniformly over the entire closure gap, has been wldely used for closure of the large tldal gaps in the Netherlands (Delta Project). However, a com- prehensive picture of rockfill stablllty has been lacking up till now, due to the various dam geometries, boundary conditions, stablllty par ameters and stability criteria under investigation. The present study comprises an evaluation of studies, performed by the Delft Hydraulics Laboratory (DHL), and other llterature data. Useful design criteria are presented, covering a wide variety of dam geometries, permeabllity effects, and wave attack additional to current attack, from the initial up to the final stage of clogure. The appllcabllty of the crlteria ls lllustrated by analysis of two recent prototype failures in the Netherlands. The deslgn criteria, presented in this paper, are considered to be of particular interest for deslgn and management of rockfill schemes.
Year: 1985