Long-term behaviour of dams with internal erosion
2009 (English)In: International Water Power and Dam Construction, ISSN 0306-400X, Vol. 61, no 7, 34-36 p.Article in journal (Refereed) Published
The performance history and long-term behavior of the dams mainly comprises of the internal erosion process of graded glacial soil associated with washout of fine grained particles from a dam's filling material by seepage. Internal erosion initiates generally by concentrated leak erosion, backward erosion, and/or suffusion. 30 existing dams comprising broadly graded soils of glacial origin that is, moraines and tills have been reviewed. These are all dams that have differing extents, and have experienced incidents of internal erosion. Incidents are most likely to occur early-on, since almost half of the dams reviewed experienced incidents during first filling or within the first year of service. The most common signs that precede an internal erosion related incident are increase in leakage, muddy leakage and pore-pressure variations in the dam body.
Place, publisher, year, edition, pages
2009. Vol. 61, no 7, 34-36 p.
Dam body, Filling materials, Fine-grained particles, First year, Glacial soils, Internal erosion, Long-term behavior, Pressure variations, Dams, Glacial geology, Soils, Leakage (fluid), dam construction, diffusion, erosion, leakage, pore pressure, rockfill dam, seepage
Other Civil Engineering
IdentifiersURN: urn:nbn:se:kth:diva-152796ScopusID: 2-s2.0-77949308226OAI: oai:DiVA.org:kth-152796DiVA: diva2:751501
QC 201410012014-10-012014-10-012014-10-01Bibliographically approved