In-situ stress measurements using oriented core - A comparison of uniaxial vs triaxial Acoustic Emission results

E. Villaescusa, L. MacHuca, X. Lei, T. Funatsu

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    This paper describes the results from a number of laboratory testing experiments conducted under uniaxial and triaxial conditions. A high speed AE monitoring system was used to record the maximum amplitude and waveform for the AE signals with no major loss of events, even for AE event rates of the order of several thousands of events per second, such as they are normally observed before a catastrophic full scale rock mass failure event. The detailed damaging process as stress was increased was determined by monitoring the complete spacio-temporal distribution of microcracking events. The results showed that for samples of similar orientation and collected immediately adjacent to each other, the magnitude of the stress field determined using a triaxial testing set-up is similar to the stress level determined using uniaxial samples.

    Original languageEnglish
    Title of host publicationRock Stress and Earthquakes - Proceedings of the 5th International Symposium on In-Situ Rock Stress
    PublisherTaylor and Francis - Balkema
    Pages217-221
    Number of pages5
    ISBN (Print)9780415601658
    DOIs
    Publication statusPublished - Jan 1 2010
    Event5th International Symposium on In-Situ Rock Stress, ISRSV 2010 - Beijing, China
    Duration: Aug 25 2010Aug 27 2010

    Publication series

    NameRock Stress and Earthquakes - Proceedings of the 5th International Symposium on In-Situ Rock Stress

    Other

    Other5th International Symposium on In-Situ Rock Stress, ISRSV 2010
    Country/TerritoryChina
    CityBeijing
    Period8/25/108/27/10

    All Science Journal Classification (ASJC) codes

    • Geology
    • Geotechnical Engineering and Engineering Geology

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