Design of Rock Protection to Prevent Erosion by Water Flows Down Steep Slopes
Publication: Journal of Hydraulic Engineering
Volume 132, Issue 10
Abstract
Conventional stability analysis methods for determining rock armor size to protect steep embankments from erosion due to downslope flow do not predict the correct dependency of armor size on the slope. Consequently, such methods become very conservative (discharge factor of safety ) at high slopes. We review published large-scale measurements recorded in the literature and show that adequate representation of flow aeration is important as proposed by Hartung and Scheuerlein in 1970. However, the assembled measurements show that the Hartung and Scheuerlein design method is not conservative. The aerated flow equations of Hartung and Scheuerlein, when combined with a correctly formulated stability equation, yield good collapse of the available large-scale data and a conservative design method.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 132 • Issue 10 • October 2006
Pages: 1110 - 1114
Copyright
© 2006 ASCE.
History
Received: Aug 26, 2004
Accepted: Sep 15, 2005
Published online: Oct 1, 2006
Published in print: Oct 2006
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