Overland Flow Hydrograph Analogy: Filling and Draining a Permeable Bag
Publication: Journal of Hydrologic Engineering
Volume 19, Issue 1
Abstract
The mathematics of filling and draining a permeable geotextile bag were developed in a previous investigation of how large geotextile containers can be used to dewater dredged material and mine tailings. The resulting outflow from the draining bag looks remarkably like an overland flow hydrograph. An analog model for overland flow is developed from the draining bag and compared with experimental runoff data obtained in the laboratory for a number of rolled erosion control blankets. The analog model is defined by a dimensionless parameter that includes a permittivity term that characterizes the rate of runoff. A comparison of the analog model with measured runoff is excellent across the entire range of natural and geosynthetic erosion control products investigated.
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Information & Authors
Information
Published In
Journal of Hydrologic Engineering
Volume 19 • Issue 1 • January 2014
Pages: 179 - 187
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Jul 14, 2012
Accepted: Nov 9, 2012
Published online: Nov 12, 2012
Discussion open until: Apr 12, 2013
Published in print: Jan 1, 2014
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