Journal of Geological Research / 2014 / Article / Tab 5

Research Article

Assessment of Slope Instability and Risk Analysis of Road Cut Slopes in Lashotor Pass, Iran

Table 5

Adjustment factors , , , , and and range of value in the SSR classification system (Taheri and Tani 2010) [6].

ParameterRange of values

Uniaxial compressive strength (MPa)0–1010–2525–5050–100100–150150–200
Rating0718283743

Rock typeGroup 1Group 2Group 3Group 4Group 5Group 6
Rating049172025

Slope excavation methodWaste dampPoor blastingNormal blastingSmooth blastingPresplittingNatural slope
Rating−11−4061024

Groundwater(Groundwater level from bottom of the slope/slope height) × 100Dry0–20%20–40%40–60%60–80%80–100%
Rating0−1−3−6−14−18

Earthquake forceHorizontal acceleration00.15 g0.20 g0.25 g0.30 g0.35 g
Rating0−11−15−19−22−26