Liquefaction potential of sand tailings dams evaluated using a probabilistic interpretation of estimated in-situ relative density

In Chile, sand tailings dams represent the most common deposits of mining residues. These structures present a potential risk in terms of mechanical instability due to their potential susceptibility to seismic liquefaction. In order to manage these risks, it is necessary to take a probabilistic appr...

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Autores principales:	Villavicencio A,Gabriel, Breul,Pierre, Bacconnet,Claude, Fourie,Andy, Espinace A,Raúl
Lenguaje:	English
Publicado:	Escuela de Construcción Civil, Pontificia Universidad Católica de Chile 2016
Materias:	cone penetrometer test relative density liquefaction sand tailings dams
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2016000200001
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spelling	oai:scielo:S0718-915X20160002000012016-10-06Liquefaction potential of sand tailings dams evaluated using a probabilistic interpretation of estimated in-situ relative densityVillavicencio A,GabrielBreul,PierreBacconnet,ClaudeFourie,AndyEspinace A,Raúl cone penetrometer test relative density liquefaction sand tailings dams In Chile, sand tailings dams represent the most common deposits of mining residues. These structures present a potential risk in terms of mechanical instability due to their potential susceptibility to seismic liquefaction. In order to manage these risks, it is necessary to take a probabilistic approach, thus accounting for inherent variability of material properties. However, in practice, implementing such an approach is impeded by the difficulty of acquiring and managing the data to be used in the reliability calculations and is conditioned by the relevance of the probabilistic models chosen to represent this variability. This paper proposes a method for onsite determination of the tailings relative density (DR%), and its variability, using dynamic penetration tests. This method was applied to typical Chilean sand tailings dams, and proposes a single model for all such tailings dams by associating a probability model to the variation of DR%. Finally, the validity of this approach is demonstrated by performing a reliability calculation of liquefaction potential (which is the main cause for the failure of this type of structure in this country) for a particular sands tailing dam.info:eu-repo/semantics/openAccessEscuela de Construcción Civil, Pontificia Universidad Católica de ChileRevista de la construcción v.15 n.2 20162016-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2016000200001en10.4067/S0718-915X2016000200001
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	cone penetrometer test relative density liquefaction sand tailings dams
spellingShingle	cone penetrometer test relative density liquefaction sand tailings dams Villavicencio A,Gabriel Breul,Pierre Bacconnet,Claude Fourie,Andy Espinace A,Raúl Liquefaction potential of sand tailings dams evaluated using a probabilistic interpretation of estimated in-situ relative density
description	In Chile, sand tailings dams represent the most common deposits of mining residues. These structures present a potential risk in terms of mechanical instability due to their potential susceptibility to seismic liquefaction. In order to manage these risks, it is necessary to take a probabilistic approach, thus accounting for inherent variability of material properties. However, in practice, implementing such an approach is impeded by the difficulty of acquiring and managing the data to be used in the reliability calculations and is conditioned by the relevance of the probabilistic models chosen to represent this variability. This paper proposes a method for onsite determination of the tailings relative density (DR%), and its variability, using dynamic penetration tests. This method was applied to typical Chilean sand tailings dams, and proposes a single model for all such tailings dams by associating a probability model to the variation of DR%. Finally, the validity of this approach is demonstrated by performing a reliability calculation of liquefaction potential (which is the main cause for the failure of this type of structure in this country) for a particular sands tailing dam.
author	Villavicencio A,Gabriel Breul,Pierre Bacconnet,Claude Fourie,Andy Espinace A,Raúl
author_facet	Villavicencio A,Gabriel Breul,Pierre Bacconnet,Claude Fourie,Andy Espinace A,Raúl
author_sort	Villavicencio A,Gabriel
title	Liquefaction potential of sand tailings dams evaluated using a probabilistic interpretation of estimated in-situ relative density
title_short	Liquefaction potential of sand tailings dams evaluated using a probabilistic interpretation of estimated in-situ relative density
title_full	Liquefaction potential of sand tailings dams evaluated using a probabilistic interpretation of estimated in-situ relative density
title_fullStr	Liquefaction potential of sand tailings dams evaluated using a probabilistic interpretation of estimated in-situ relative density
title_full_unstemmed	Liquefaction potential of sand tailings dams evaluated using a probabilistic interpretation of estimated in-situ relative density
title_sort	liquefaction potential of sand tailings dams evaluated using a probabilistic interpretation of estimated in-situ relative density
publisher	Escuela de Construcción Civil, Pontificia Universidad Católica de Chile
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2016000200001
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Liquefaction potential of sand tailings dams evaluated using a probabilistic interpretation of estimated in-situ relative density

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