Brazilian banded iron formations: a geological and geotechnical characterisation from hard and fresh to weak and completely weathered rocks

Teofilo Vieira da Costa

Research output: ThesisDoctoral Thesis

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Abstract

This involved a comprehensive study of the dominant banded iron formations units that cover 15 of the Vale iron ore mining projects in Brazil. The study comprised laboratory testing and petrophysical determination of proprieties of the different weathering horizons. Relationships were established between the petrophysical, rock strength and elastic arameters. The work concluded that each weathering horizon could be represented by typical parameters that can define a specific geomechanical behaviour, principally controlled by the iron content/bulk density, total porosity/permeability, and the mineral composition/band thickness. Ultimately, these parameters control the slope stability from shallow to deep iron ore mines.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • The University of Western Australia
Supervisors/Advisors
  • Dight, Phil, Supervisor
  • Marques, Eduardo Antônio Gomes, Supervisor, External person
  • Mercer, Ken, Supervisor
Award date18 Oct 2021
DOIs
Publication statusUnpublished - 2021

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