1. Classification systems in slope stability analysis
Slope Mass Rating (SMR)
Chinese Slope Mass Rating System (CSMR)
Rock slope rating (RSR)
Slope stability rating (SSR) classification system
Dump mass rating

2. Slope Mass Rating (SMR)
SMR = RMR + (F1 .F2 . F3) + F4
The RMR is computed according to Bieniawski’s 1979 proposal, adding rating values for five parameters:
Strength of intact rock;
RQD (measured or estimated);
Spacing of discontinuities;
Condition of discontinuities; and
Water inflow through discontinuities

3. Adjustment ratings for method of excavation (after Romana, 1995)
F3 reflects the relationship between the slope face and the joint dip.
F4 is a factor for the method of excavation. The adjustment factor for the method of excavation has been fixed empirically as follows:
Adjustment ratings for method of excavation (after Romana, 1995)
Method
Natural slope
Presplitting
Smooth blasting
Blasting or mechanical
Deficient Blasting F4
+15
+10 +8 -8

4. Rock slope rating (RSR)

5. Slope stability rating (SSR) classification system