Model for Predicting Floods due to Earthen Dam Breaching. II: Comparison with Other Methods and Predictive Use
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Volume 134, Issue 12
Abstract
A sensitivity analysis of the model presented in the companion paper is made and, on the basis of the results a criterion is proposed for the choice of values to assign to the side slopes of the breach, in order to use the model for prediction. Moreover, the sensitivity analysis shows that the outflow hydrograph and its peak value depend not only on the dam height and the stored volume, but also on the vertical distribution of the water mass in the reservoir. The model is compared with some previously published methods and the disadvantages, limitations, and errors that can be made using parametric models and predictive equations are pointed out. Finally, easy to use equations interpolating the numerical results of the model are provided that predict not only the peak discharge but the whole outflow hydrograph for overtopping failures.
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Acknowledgments
The writers are grateful to the anonymous reviewers for their valuable observations which led to a greater in-depth analysis of a number of aspects dealt with herein. The writers also wish to thank this journal’s editor for his valuable suggestions and comments. Thanks also go to Gianluca De Lorenzo for his notable contribution to the numerical calculation and layout of the figures.
References
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Published In
Journal of Hydraulic Engineering
Volume 134 • Issue 12 • December 2008
Pages: 1697 - 1707
Copyright
© 2008 ASCE.
History
Received: Jan 17, 2007
Accepted: Jul 15, 2008
Published online: Dec 1, 2008
Published in print: Dec 2008
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