Exploració per tema "Preses (Enginyeria) -- Aspectes ambientals"
Ara es mostren els items 1-16 de 16
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A review of Beliche Dam
(Institution of Civil Engineers (http://www.ice.org.uk/), 2005)
Article
Accés obertBeliche 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 ... -
Application of a critical state model to the Merriespruit tailings dam failure
(2022-04)
Article
Accés obertThe use of stress–deformation analyses to evaluate the characteristics of possible static liquefaction events is rapidly becoming the norm for tailings dams exposed to such risk. Ideally, those analyses should be based on ... -
Aznalcóllar dam failure. Part 1: Field observations and material properties
(Institution of Civil Engineers (http://www.ice.org.uk/), 2006)
Article
Accés obertThe paper describes the failure of Aznalcóllar dam, in southern Spain, in April 1998. The rockfill dam slid forward and released a flow of acid-saturated tailings. The geology and geomorphology of the site are described. ... -
Aznalcóllar dam failure. Part 2: Stability conditions and failure
(Institution of Civil Engineers (http://www.ice.org.uk/), 2006)
Article
Accés obertAn analysis of the conditions that led to the failure of the Aznalcóllar dam is made in the paper. Pore water pressures prevailing in the foundation clay at the time of the failure have been established on the basis of ... -
Aznalcóllar dam failure. Part 3: Dynamics of the motion
(Institution of Civil Engineers (http://www.ice.org.uk/), 2006)
Article
Accés obertThe 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 ... -
Characterizing a filtered stabilized metallurgical residue with PMT
(University of British Columbia (UBC), 2022)
Text en actes de congrés
Accés obertThis paper illustrates how pressuremeter testing may add value to geotechnical characterization of tailing storage facilities (TSF). This is done with reference to results obtained in a campaign on jarosa, a lime-stabilized ... -
Effects of tailings viscosity on liquefaction triggering analyses
(University of Alberta, 2021)
Text en actes de congrés
Accés restringit per política de l'editorialRecent analyses have suggested that creep or rate effects may be present in some tailings and can play a role in triggering liquefaction failure. However, the role of creep in liquefaction triggering analysis of tailing ... -
El comportamiento de las presas de Baserca y Llauset en los nuevos escenarios energéticos
(Sociedad Española de Métodos Numéricos en Ingeniería (SEMNI), 2013)
Text en actes de congrés
Accés obertLas crecientes demandas energéticas están promoviendo nuevas estrategias comerciales en la explotación de las infraestructuras hidráulicas que se materializan aumentando el protagonismo de los saltos reversibles en la ... -
Exploring viscous effects on numerical simulations of static liquefaction triggering
(Gecamin, 2022)
Comunicació de congrés
Accés restringit per política de l'editorialFailures due to static liquefaction have been too frequent in tailings dams. Stress-deformation numerical analyses based on critical state theory are able to reproduce those failures and may be used to gain insight into ... -
Influence of the particle size distribution on the Critical State Properties of Mine Tailings
(University of British Columbia (UBC), 2022)
Text en actes de congrés
Accés obertArguably, critical state soil mechanics (CSSM) is now the preeminent methodology for understanding static liquefaction of mine tailings, having been used in the mining industry by the expert panels retained to investigate ... -
La rotura de la presa de relaves de Brumadinho: la montaña de cristal
(2022)
Text en actes de congrés
Accés restringit per política de l'editorialEn Enero de 2019 en Brumadinho (Brasil) una presa de relaves mineros de gran tamaño colapsó en su totalidad de forma brusca, causando la muerte a 270 personas y una gran conmoción en la minería mundial. La rotura fue ... -
A machine learning based methodology for anomaly detection in dam behaviour
(Universitat Politècnica de Catalunya, 2017-02-23)
Tesi
Accés obertDam behaviour is difficult to predict with high accuracy. Numerical models for structural calculation solve the equations of continuum mechanics, but are subject to considerable uncertainty as to the characterisation of ... -
Mechanisms of progressive failure in brittle argillaceous materials: the failure of Aznalcóllar dam
(2011)
Text en actes de congrés
Accés restringit per política de l'editorialThis document presents a brief summary of the failure of Azna1cóllar dam, a catastrophic slide that caused one of the worst environmental disasters in Spain. The account inc1udes a description of the failure and of the ... -
Permeation grouting of an upstream tailing dam: a feasibility study
(University of British Columbia (UBC), 2022)
Text en actes de congrés
Accés obertThe presence of potentially liquefiable deposits in tailing dams represents a serious hazard, as is now increasingly clear that liquefaction triggering may occur in unanticipated ways. For legacy dams in which this hazard ... -
Tailings desiccation process studied in environmental chamber experiment
(2022-04)
Article
Accés obertCase studies and numerical simulations show that the long-term stability of tailings dams largely depends on the evolution of their water content. Therefore, desiccation is one of the critical processes influencing the ... -
El uso y la tecnología de los recursos hídridos
(Universitat Politècnica de Catalunya, 2007-01)
Projecte/Treball Final de Carrera
Accés obert