Počet záznamů: 1

Modelling the non-standard in-situ loading paths in 3D stress space through laboratory triaxial experiments

  1. 1.
    0460444 - UGN-S 2017 RIV FI eng C - Konferenční příspěvek (zahraniční konf.)
    Janeček, Ivan - Mishra, A. Deepak
    Modelling the non-standard in-situ loading paths in 3D stress space through laboratory triaxial experiments.
    Tampere, Finland Symposium Proceedings. Tampere: The Finish National Group of ISRM and Finish Association of Civil Engineers RIL, 2016 - (Johansson, E.; Raasakka, V.), s. 482-491. ISBN 978-951-758-606-1. ISSN 0356-9403.
    [International Symposium on In-Situ Rock Stress - RS2016 /7./. Tampere (FI), 10.05.2016-12.05.2016]
    Grant CEP: GA MŠk(CZ) LO1406; GA MŠk ED2.1.00/03.0082
    Institucionální podpora: RVO:68145535
    Klíčová slova: triaxial test * in situ stress * mechanical properties of rocks
    Kód oboru RIV: DH - Báňský průmysl vč. těžby a zpracování uhlí
    https://dl.dropboxusercontent.com/u/27909263/RS2016%20Tampere%20Proceedings.pdf https://dl.dropboxusercontent.com/u/27909263/RS2016%20Tampere%20Proceedings.pdf

    Majority of experimental strength and deformational characteristics of rocks are obtained from uniaxial tests,
    mainly from compression tests, or through the particular triaxial experiments commonly known as Conventional
    Triaxial Compression (CTC). The procedure of CTC test usually consists of initial compression up to isotropic
    pressure imitating e.g. a component of geostatic stress at a given depth, and subsequent application of
    additional axial loading, which can be a model of anisotropic stress conditions or differential stresses originating
    from inhomogeneities or movement of surrounding rock masses. This CTC test, however, cannot always portray
    the in-situ conditions. For example such axial compression does not reflect the real stress paths during the rock
    burst. More appropriate experimental model for the phenomenon is axial stress reduction inducing axial
    extension in test named Reduced Triaxial Extension (RTE). Stress paths representing axial extension are also
    important in case of core disking. In addition to CTC and RTE paths, the next complementary paths can be
    considered: Conventional Triaxial Extension (CTE) or Reduced Triaxial Compression (RTC) using increasing or
    decreasing the lateral stress respectively. This work discusses the experimental methodology and technical
    solutions prepared for realization of several special loading paths in laboratory triaxial experiment.

    Trvalý link: http://hdl.handle.net/11104/0260525
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