Measurement of pore water pressure properties of unsaturated brown coal using triaxial test

C. Couling, A. Tolooiyan, R. Mackay, J. Xue

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    Abstract

    Skempton's B parameter characterises the effect of fluid compressibility on the time dependent deformation of materials during isotropic loading. The Skempton B-parameter has been determined for a sample of Victorian brown coal for a range of confining pressures, corresponding to the range of conditions which the coal experiences below the ground water table. The relationship between the change in the B-parameter with respect to time and pressure has also been examined. It has been found that a high back pressure (more than 400 kPa) is required in the material to achieve a degree of saturation close to 100+ACU-. The set of data from these tests is able to provide important evidence of the depth and stress dependent behaviour of the coal.

    Original languageEnglish
    Title of host publicationUnsaturated Soils: Research and Applications
    Subtitle of host publicationProceedings of the 6th International Conference on Unsaturated Soils, UNSAT 2014
    EditorsN Khalili, R Russell, A Khoshghalb
    PublisherTaylor & Francis
    Pages1531-1535
    Number of pages5
    Volume2
    ISBN (Print)9781138026902
    Publication statusPublished - 2014
    EventInternational Conference on Unsaturated Soils 2014 - Sydney, Australia
    Duration: 2 Jul 20144 Jul 2014
    Conference number: 6th

    Conference

    ConferenceInternational Conference on Unsaturated Soils 2014
    Abbreviated titleUNSAT 2014
    Country/TerritoryAustralia
    CitySydney
    Period2/07/144/07/14

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