Fine-tuning of the backward erosion piping model through small-scale, medium-scale and IJkdijk experiments / Hans Sellmeijer in European journal of environmental and civil engineering, Vol. 15 N° 8 (Août 2011)  

Public ISBD [article]  inEuropean journal of environmental and civil engineering > Vol. 15 N° 8 (Août 2011) . - pp. 1139-1154 Titre : Fine-tuning of the backward erosion piping model through small-scale, medium-scale and IJkdijk experiments Titre original : Identification du modèle d'érosion régressive sur des expérimentations à petite et moyenne échelle, et sur l'expérimentation IJkdijk Type de document : texte imprimé Auteurs : Hans Sellmeijer, Auteur ; Juliana Lopez de la Cruz, Auteur ; Vera M. Van Beek, Auteur Année de publication : 2012 Article en page(s) : pp. 1139-1154 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Experiments Backward erosion Piping model Multivariate analysis Permeability Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : A semi-theoretical model is available to estimate the effect of backward erosion piping by underseepage in a dike by computing the critical head. The model accounts for the groundwater flow through the subsoil, pipe flow through the erosion channel and a limited particle equilibrium at the bottom of the channel. This model is extended and updated with the results of a wide range of tests presented in the paper of (Van Beek et al., 2011). The smallscale tests are analyzed by means of a multivariate regression in order to identify the level of influence of each variable. The regression outcome for the permeability corresponds precisely with the outcome of the prediction rule. The effect of relative density, uniformity and particle roundness is empirically dealt with. The role of the particle size is adapted in the new empirical formulation. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=16704 [article] Fine-tuning of the backward erosion piping model through small-scale, medium-scale and IJkdijk experiments = Identification du modèle d'érosion régressive sur des expérimentations à petite et moyenne échelle, et sur l'expérimentation IJkdijk [texte imprimé] / Hans Sellmeijer, Auteur ; Juliana Lopez de la Cruz, Auteur ; Vera M. Van Beek, Auteur . - 2012 . - pp. 1139-1154. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 15 N° 8 (Août 2011) . - pp. 1139-1154 Mots-clés : Experiments Backward erosion Piping model Multivariate analysis Permeability Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : A semi-theoretical model is available to estimate the effect of backward erosion piping by underseepage in a dike by computing the critical head. The model accounts for the groundwater flow through the subsoil, pipe flow through the erosion channel and a limited particle equilibrium at the bottom of the channel. This model is extended and updated with the results of a wide range of tests presented in the paper of (Van Beek et al., 2011). The smallscale tests are analyzed by means of a multivariate regression in order to identify the level of influence of each variable. The regression outcome for the permeability corresponds precisely with the outcome of the prediction rule. The effect of relative density, uniformity and particle roundness is empirically dealt with. The role of the particle size is adapted in the new empirical formulation. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=16704

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