Energy Dissipation on Reinforced Block Ramps
This article has a reply.
VIEW THE REPLYThis article has a reply.
VIEW THE REPLYPublication: Journal of Irrigation and Drainage Engineering
Volume 132, Issue 3
Abstract
Block ramps or rock chutes are stream restoration structures used in many hydraulic projects. If the base material presents stability problems, a reinforcement can be used; it consists of placing over the ramp rocks greater in size than the base material in order to increase the flow resistance and reduce the shear stresses on the base material. The presence of these boulders also changes the energy dissipation of the flow over the structure. This work shows the results of experimental tests conducted on reinforced block ramps with slopes varying from 0.08 to 0.33. The effect of the various geometric parameters has been investigated. The aim is to extend existing relationships for a simple block ramp and define a new equation that can be applied to a block ramp with or without the presence of boulders.
Get full access to this article
View all available purchase options and get full access to this article.
References
Ferro, V. (1999). “Evaluating friction factor for gravel bed channel with high boulder concentration.” J. Hydraul. Eng., 125(7), 771–778.
Lawrence, D. S. L. (1997). “Macroscale surface roughness and frictional resistance in overland flow.” Earth Surf. Processes Landforms, 22, 365–382.
Pagliara, S., and Chiavaccini, P. (2004). “Stability of reinforced block ramps.” Proc., River Flow Int. Conf., Balkema, Rotterdam, The Netherlands, 1291–1295.
Pagliara, S., and Chiavaccini, P. (2005). “Energy dissipation on block ramps.” J. Hydraul. Eng., 132(1), 41–48.
Pagliara, S., and Peruginelli, A. (2000). “Energy dissipation comparison among stepped channel, drop and ramp structures.” Proc., Workshop on Hydraulics of Stepped Spillways, Zurich, Switzerland, 111–118.
Rice, C. E., Kadavy, K. C., and Robinson, K. M. (1998). “Roughness of loose rock riprap on steep slopes.” J. Hydraul. Eng., 124(2), 179–185.
Whittaker, J., and Jäggi, M. (1986). “Blockschwellen,” Mitteilungen 91, Versuchsanstalt für Wasserbau Hydrologie und Glaziologie, ETH, Zurich, Switzerland.
Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 132 • Issue 3 • June 2006
Pages: 293 - 297
Copyright
© 2006 ASCE.
History
Received: Dec 15, 2004
Accepted: Jul 1, 2005
Published online: Jun 1, 2006
Published in print: Jun 2006
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.