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Citació: Gens, A.; Alonso, E.E. Aznalcóllar dam failure. Part 3: Dynamics of the motion. Géotechnique, 2006, vol. 56, no. 3, pp. 203-210.
Títol: Aznalcóllar dam failure. Part 3: Dynamics of the motion
Autor: Gens Solé, Antonio Veure Producció científica UPC; Alonso Pérez de Agreda, Eduardo Veure Producció científica UPC
Editorial: Institution of Civil Engineers (http://www.ice.org.uk/)
Data: 2006
Tipus de document: Article
Resum: The motion of the Aznalcóllar dam slide, after the initiation of the failure, is examined in the paper. The moving mass remained essentially rigid, and Newton’s second law provides the basic equation to determine the resulting dam displacement, velocity and acceleration. Resisting forces have been derived from a previous analysis of the conditions leading to failure. Pore water pressures induced by the forward motion of the dam are approximated as an undrained loading of the clay. Driving forces and their evolution in time derive from the liquefaction of tailings and the condition of constant volume of liquefied tailings pushing the moving dam forward. The stable ‘cliff’ left by the motion inside the tailings lagoon supports this hypothesis. The model is able to reproduceclosely the distance travelled by the dam. It shows a low sensitivity with respect to reasonable changes of the main parameters. The model computes that the slide motion lasted about 15 s, and that the maximum acceleration experienced by the dam was 0.14g.
URI: http://hdl.handle.net/2117/2627
DOI: 10.1680/geot.2006.56.3.203
Apareix a les col·leccions:ETCG – Departament d’Enginyeria del Terreny, Cartogràfica i Geofísica. Articles de revista
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