Development of a Test Series to Determine In Situ Thermomechanical and Transport Properties

    Published: Jan 1985

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    A small number of heated block tests have been performed, with the objective of determining the usefulness of large-scale field testing in site characterization for an underground nuclear waste repository. These tests have been research oriented, involving independent control of the state of stress and temperature in a specimen of rock having a volume of 8 m3. The heated block test is a logical candidate to obtain information on repository design and licensing, particularly for validating predictive repository model performance. A description is given of the preparation, field work, and analysis that comprised the heated block tests at the Colorado School of Mines (CSM) experimental mine and G-tunnel on the Nevada test site. These demonstrations of the heated block test showed that additional refinement is possible and especially that the method was effective in gathering meaningful data not obtainable by any other means. Such data included the apparent coupling of the effects of independently controlled stress and temperature on the deformation behavior of jointed rock, and on the conductivity of a single fracture to injected water.


    rocks, rock mechanics, flatjack test, block test, heated block, site characterization

    Author Information:

    Hardin, EL
    Staff engineers, Science Applications, Inc., Las Vegas, NV

    Voegele, MD
    Staff engineers, Science Applications, Inc., Las Vegas, NV

    Board, MP
    Staff engineers, Science Applications, Inc., Las Vegas, NV

    Pratt, HR
    Chief scientist, Science Applications, Inc., La Jolla, CA

    Committee/Subcommittee: D18.12

    DOI: 10.1520/STP32834S

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