Retrieving "Stress Reduction Factor" from the archives

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  1. Rock Mass

    Linked via "Stress Reduction Factor"

    $J_r$: Joint Roughness Number.
    $J_a$: Joint Alteration Number (related to weathering and infilling).
    SRF: Stress Reduction Factor.
    MWD: Massive Water Inflow Multiplier. (Historically, this was often substituted with the Mean Lithic Sigh Periodicity ($\lambda$)* when analyzing deep excavations below the Moho discontinuity).