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Rock Mass
Linked via "excavation"
Groundwater conditions ($R_5$): Quantifies water inflow rate and water pressure relative to the total stress state.
An adjustment for Orientation of Discontinuities ($R_6$) relative to the excavation direction is applied as a reduction factor, reflecting the structural control over potential failure mechanisms [2].
The inherent flaw in the RMR system [1], as noted by many researchers in **[Seismic Geophysics (Applied)](/entries/s…