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Citació: Alonso, E.E.; Olivella, S. Pinyol, N.M. A review of Beliche Dam. Géotechnique, 2005, vol. 55, no. 4, pp. 267–285.
Títol: A review of Beliche Dam
Autor: Alonso, Eduardo (Alonso Pérez de Agreda)
Olivella Pastallé, Sebastià
Pinyol, N.
Editorial: Institution of Civil Engineers (http://www.ice.org.uk/)
Departament: Universitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica
Matèries: Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia
Tailings dams--Accidents
Numerical analysis
case history
dams
collapsed settlement
constitutive relations
laboratory tests
numerical modelling and analysis
Preses (Enginyeria) -- Aspectes ambientals
Anàlisi numèrica
Data: 2005
Tipus de document: Article
Resum: Beliche Dam, a zoned earthdam with rockfill shouldersand a central clay core, experienced large collapse settlements due to reservoir impounding and direct action of rainfall. Long-term field records of vertical and horizontal displacements are available as well as a set of largescale laboratory tests on rockfill specimens. It has been the subject of several numerical analyses that failed to capture the relevant effect of weather conditions on the behaviour of the dam. Recent developments in the constitutive modelling of rockfill allow a substantial improvement of modelling capabilities, and this is illustrated in the paper. Laboratory test results under dry and flooded conditions were interpreted, and material parameters were identified. The complete history of dam construction, impoundment and rainfall was then simulated by means of a coupled flow–deformation model. Deformations during construction and impoundment have been reproduced. Long-term deformations have consistently been related to rainfall records. In general, long-term deformations are controlled by the varying wetting history of the dam shoulders and by an intrinsic deformation component. The wetting action comes to an end when the relative humidity of the rockfill reaches 100% for the first time. The paper also discusses scale effects and the role of rockfill permeability in the development of deformations.
Descripció: "Crampton Price" de la Institution of Civil Engineers (London)
URI: http://hdl.handle.net/2117/2629
Versió de l'editor: 10.1680/geot.55.4.267.65493
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