Field Performance and Analysis of Steep Riprap
Publication: Journal of Geotechnical Engineering
Volume 118, Issue 9
Abstract
The performance of riprap with a slope on the order of 1.5:1 to 2.3:1 was evaluated at 14 different dam sites in the James Bay Territory in Northern Québec. The field investigations included gradation measurement at each site and have allowed a back analysis of the performance using the wave height experienced by the riprap since reservoir filling. The wave prediction method recommended by the U.S. Army Corps of Engineers in 1984 and the Hudson stability formula have allowed a back analysis in good agreement with the observed field performance for regular gradation riprap. For riprap containing a significant portion of fine material, the observed damage was always more severe than predicted using the median weight. The results of the study show that for steep slopes the inclusion of fine stones in the riprap is detrimental to the stability.
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Information & Authors
Information
Published In
Journal of Geotechnical Engineering
Volume 118 • Issue 9 • September 1992
Pages: 1431 - 1448
Copyright
Copyright © 1992 ASCE.
History
Published online: Sep 1, 1992
Published in print: Sep 1992
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