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Investigation of an Australian soft rock permeability variation
journal contributionposted on 2023-05-20, 17:00 authored by Ali TolooiyanAli Tolooiyan, Ashley DysonAshley Dyson, Karami, M, Shaghaghi, T, Ghadrdan, M
In this study, permeabilities of Victorian Brown Coal (VBC) as an Australian soft rock are determined for a range of depths of a continuous coal seam located at the batter crest of the Yallourn brown coal open-cut mine in Victoria, Australia, by implementing a Lugeon packer testing procedure. Permeability values are determined both analytically and by numerical simulation and are compared with laboratory test results. Field testing resulted in permeabilities several orders of magnitude higher than laboratory testing, suggesting the existence of fractures common to lignite structures on a greater scale than can be observed in the laboratory. The variation of depth-based field and laboratory permeabilities is discussed, as well as the necessary conditions required for the numerical modelling of packer testing within VBC.
Publication titleBulletin of Engineering Geology and The Environment
Department/SchoolSchool of Engineering
Place of publicationGermany
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