Résumé - Abstract
The characteristic stress-strain-strength behaviour of foundation soils, embankment and impounded materials constitutes one of the input parameters for static and dynamic stress-strain deformation modelling of tailings dams. Incorporating such behaviour into the stress-deformation analyses is considered key to reduce uncertainty in predictions of the embankment performance and deformation. This paper discusses the approach for laboratory testing to obtain the stress-strain-strength characteristic behaviour of typical foundation materials (clay, silt, till); rockfill; sandy tailings for embankment construction; and fine-grained impounded tailings, directed to obtain material-specific parameters for numerical modelling. Results of testing carried out to obtain Critical State Locus properties on tailings; monotonic and cyclic simple shear testing on clayey soils and tailings; and triaxial and compression testing on coarse- and fine-grained materials will be presented. Challenges to mimic the best in situ response will be discussed.
Biographie du présentateur - Biography of the presenter
Geotechnical Engineer at Golder Associates with more than 15 years of experience in geotechnical engineering. María obtained her Ph.D. in Geotechnical Engineering at the University of British Columbia working on the mechanical characterization of natural low-plastic silts and tailings. She has extensive experience in advanced in situ and laboratory exploration programs for tailings dams and foundation characterization. She has been involved in site characterization, stability analysis, numerical modelling and liquefaction susceptibility assessment of mine waste facilities, dams, and foundations in different parts of the world. She is part of the technical team of Golder’s advanced geotechnical laboratories, and subject matter expert reviewer for advanced laboratory testing for academic and industry geotechnical laboratories.
María is a registered Professional Engineer with Engineers and Geoscientists of British Columbia, and with the Northwest Territories and Nunavut Association of Professional Engineers and Geoscientists.
Language
English
