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Headword erosion in embankment dams caused by spillway flood discharge
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630), Hydraulic Engineering (moved 20130630). Vattenfall RandD, Sweden.
2012 (English)In: International journal on hydropower and dams, ISSN 1352-2523, Vol. 19, no 6, 68-72 p.Article in journal (Refereed) Published
Abstract [en]

An embankment dam with conventional stability requirements should be able to withstand so- called design seepage flow, which is often turbulent. To meet this requirement, many dams in the country have been reinforced with stabilizing measures. Another type of instability issue for embankment dams is headward erosion, which is less common and subsequently receives less attention in the design. The bedrock elevation downstream of the energy dissipator and in its immediate vicinity is another important factor in erosion studies, and should be identified in advance. The bedrock elevation determines how deep the erosion down-cut will develop. Hydraulic model tests prove to be an easy means of evaluating issues of this type. All the models are based on Froude scaling laws without vertical scale distortion. Based on the prototype data, sand and gravel of appropriate sizes are chosen as erodible material.

Place, publisher, year, edition, pages
Aqua Media International , 2012. Vol. 19, no 6, 68-72 p.
Keyword [en]
Embankment dams, spillway flood discharge, headward erosion
National Category
Water Engineering
URN: urn:nbn:se:kth:diva-115481ScopusID: 2-s2.0-84871999775OAI: diva2:588797

QC 20130116. QC 20160209

Available from: 2013-01-16 Created: 2013-01-15 Last updated: 2016-02-09Bibliographically approved

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