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    Large-Scale True Triaxial Apparatus for Geophysical Studies in Fractured Rock

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    GTJ20170144.30877.pdf
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    Description:
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    Type
    Article
    Authors
    Garcia, A. V.
    Rached, R. M.
    Santamarina, Carlos cc
    KAUST Department
    Ali I. Al-Naimi Petroleum Engineering Research Center (ANPERC)
    Earth Science and Engineering Program
    Energy Resources and Petroleum Engineering
    Physical Science and Engineering (PSE) Division
    Date
    2018-05-16
    Online Publication Date
    2018-05-16
    Print Publication Date
    2018-07-01
    Permanent link to this record
    http://hdl.handle.net/10754/627935
    
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    Abstract
    The study of fractured rock masses in the laboratory remains challenging because of the large specimen sizes and bulky loading systems that are required. This article presents the design, structural analysis, and operation of a compact and self-reacting true triaxial device for fractured rock. The frame subjects a 50 cm by 50 cm by 50 cm fractured rock specimen to a maximum stress of 3 MPa along three independent axes. Concurrent measurements include long-wavelength P-wave propagation, passive acoustic emission monitoring, deformations, and thermal measurements. The device can accommodate diverse research, from rock mass properties and geophysical fractured rock characterizations, to coupled hydro-chemo-thermo-mechanical processes, drilling, and grouting. Preliminary wave propagation data gathered under isotropic and anisotropic stress conditions for an assembly of 4,000 rock blocks demonstrate the system’s versatility and provide unprecedented information related to long-wavelength propagation in fractured rock under various stress anisotropies.
    Citation
    Garcia AV, Rached RM, Santamarina JC (2018) Large-Scale True Triaxial Apparatus for Geophysical Studies in Fractured Rock. Geotechnical Testing Journal 41: 20170144. Available: http://dx.doi.org/10.1520/gtj20170144.
    Sponsors
    Financial support for this research was provided by the KAUST endowment. The authors would like to thank Gabrielle Abelskamp for her assistance with editing this manuscript.
    Publisher
    ASTM International
    Journal
    Geotechnical Testing Journal
    DOI
    10.1520/gtj20170144
    Additional Links
    https://compass.astm.org/DIGITAL_LIBRARY/JOURNALS/GEOTECH/PAGES/GTJ20170144.htm
    ae974a485f413a2113503eed53cd6c53
    10.1520/gtj20170144
    Scopus Count
    Collections
    Articles; Ali I. Al-Naimi Petroleum Engineering Research Center (ANPERC); Physical Science and Engineering (PSE) Division; Earth Science and Engineering Program

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