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  • Stress In Rock

    • April 21, 2017
    • Posted by: Ian Gray
    • Category: News
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    Stress In Rock

    The engineering profession needs to measure stress in rock for the purposes of design or for the confirmation of stresses during or following construction. The question is, what stress matters? In the past the only stress that could be measured was that near an opening and indeed it is frequently the only stress that is

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  • Getting to the heart of Real Rock Properties

    • March 16, 2017
    • Posted by: Ian Gray
    • Category: News
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    coal seams in a cut test

    The models and methodologies for determining rock properties and predicting rock behaviour are numerous, but are they all equally effective? Designing tunnels, mines or rock slopes requires a model with which to predict their behaviour so that failure may be avoided. Failure may be defined in all cases as unacceptable deformation, but what defines acceptable

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  • The Measurement of Rock Stress for Tunnelling

    • March 14, 2017
    • Posted by: Ian Gray
    • Category: Research
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    Gray, Ian (2014). The Measurement of Rock Stress for Tunnelling. 15th Australasian Tunnelling Conference 2014. Sydney, NSW. 17-19 September 2014. Abstract While in some cases it is vitally important to measure the virgin stress in rock prior to tunnelling there are a number of cases where such stress measurement is really not required. The concept

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  • In-situ Stress Testing (IST)

    • March 24, 2014
    • Posted by: admin
    • Category: News
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        More info

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