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Hydromechanical analysis of upstream tailings disposal facilities / Bassam Saad in Journal of geotechnical and geoenvironmental engineering, Vol. 137 N° 1 (Janvier 2011) 

Public ISBD [article]  in Journal of geotechnical and geoenvironmental engineering > Vol. 137 N° 1 (Janvier 2011) . - pp. 27-42 Titre : Hydromechanical analysis of upstream tailings disposal facilities Type de document : texte imprimé Auteurs : Bassam Saad, Auteur ; Hani Mitri, Auteur Année de publication : 2011 Article en page(s) : pp. 27-42 Note générale : Géotechnique Langues : Anglais (eng) Mots-clés : Tailings  Staged  construction  Coupled  analysis  Finite  element Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : Very large quantities of mined ore materials are processed annually to obtain the various types of minerals that are essential to industrial processes. Due to its execution simplicity and low cost, upstream tailings disposal has been the most common method used for the surface disposal of tailings produced from processing the mined ore materials in spite of it being the most vulnerable to failure. The complex hydromechanical behavior of the upstream tailings disposal facilities (UTDFs) during their staged construction makes the traditional approaches to consolidation, stability, and seepage analyses inadequate for producing accurate and, in many situations, correct design and evaluation of these facilities. Transient coupled nonlinear finite-element analyses are carried out in this paper using the general purpose code ABAQUS to investigate the hydromechanical behavior of the UTDF during its staged construction. The analyses simulate, in combination, a number of realistic features of the UTDFs during construction, including the transient partially saturated flow within the impoundment, the two-dimensional large consolidation and nonlinear material response of the tailings, and the staged construction loading with time. The UTDF response as predicted by the numerical analyses, which are carried out in the form of comparative study on three different impoundment tailings, is qualitatively comparable with the UTDF behavior trends observed and reported in the literature. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/gto/resource/1/jggefk/v137/i1/p27_s1?isAuthorized=no [article] Hydromechanical analysis of upstream tailings disposal facilities [texte imprimé] / Bassam Saad, Auteur ; Hani Mitri, Auteur . - 2011 . - pp. 27-42. Géotechnique Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 137 N° 1 (Janvier 2011) . - pp. 27-42 Mots-clés : Tailings  Staged  construction  Coupled  analysis  Finite  element Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : Very large quantities of mined ore materials are processed annually to obtain the various types of minerals that are essential to industrial processes. Due to its execution simplicity and low cost, upstream tailings disposal has been the most common method used for the surface disposal of tailings produced from processing the mined ore materials in spite of it being the most vulnerable to failure. The complex hydromechanical behavior of the upstream tailings disposal facilities (UTDFs) during their staged construction makes the traditional approaches to consolidation, stability, and seepage analyses inadequate for producing accurate and, in many situations, correct design and evaluation of these facilities. Transient coupled nonlinear finite-element analyses are carried out in this paper using the general purpose code ABAQUS to investigate the hydromechanical behavior of the UTDF during its staged construction. The analyses simulate, in combination, a number of realistic features of the UTDFs during construction, including the transient partially saturated flow within the impoundment, the two-dimensional large consolidation and nonlinear material response of the tailings, and the staged construction loading with time. The UTDF response as predicted by the numerical analyses, which are carried out in the form of comparative study on three different impoundment tailings, is qualitatively comparable with the UTDF behavior trends observed and reported in the literature. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/gto/resource/1/jggefk/v137/i1/p27_s1?isAuthorized=no