Rock Mass Rating (RMR) is a system used to assess the e quality of rock in mining and civil accorering projects. It helps in designing stable and accesent mines by evaluating various rock accesties. Proper calculation of RMR ensures safety and cost- ectiveness in mine development.

Understanding thee Components of RMR

Te RMR system considels five e main parameters: uniaxial compressive th, rock quality designation (RQD), spaming of discontinuities, condition of discontinuities, and grounwater conditions. Each parameter is assigned a score based on specific criteria.

Krok po Výpočet RMR

Begin by evaluating each parameter treamgh field observations and laboratory tests. Assign scores according to standardized charts. Sum thee scores to obtain thee total RMR value, which indicates thee overall rock quality.

Interpreting RMR Results

RMR values typically range from 0 to 100. Higher scores indicate better rock quality. Values approve 70 suppresses t good quality rock suable for stable excavation, while le le lower scores may require additional support measures.

  • Assess rock till
  • Vyhodnocení přerušené platnosti mezery
  • Check for water inflow
  • Určete podmínky pro ukončení platnosti
  • Měření RQD