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.

Item Type:	Refereed Article
Keywords:	intermediate geotechnical material, Victorian brown coal, permeability, hydraulic conductivity, packer test
Research Division:	Engineering
Research Group:	Civil engineering
Research Field:	Civil geotechnical engineering
Objective Division:	Expanding Knowledge
Objective Group:	Expanding knowledge
Objective Field:	Expanding knowledge in engineering
UTAS Author:	Tolooiyan, A (Dr Ali Tolooiyan)
UTAS Author:	Dyson, AP (Dr Ashley Dyson)
ID Code:	140446
Year Published:	2020
Web of Science® Times Cited:	5
Deposited By:	Engineering
Deposited On:	2020-08-18
Last Modified:	2021-02-10
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