Fig 1.
Location map of the study area (Drawn with QGIS software).
Fig 2.
Seismic hazard map of Ethiopia for 100 years return period modified after [31].
Table 1.
Summary of laboratory tests on soil samples.
Table 2.
Location and descriptions of critical slope sections identified during detailed field survey.
Fig 3.
Normal vs shear stress graph of direct shear test of soil sample (D1S3).
Fig 4.
Normal vs shear stress graph of direct shear test of soil sample (D1S2).
Table 3.
Summary of unit weight test of soil sample collected from two critical sections.
Table 4.
Parameters for input into slide 2D for soil slope.
Table 5.
The factor of safety determined to limit the equilibrium method of soil slope sections.
Table 6.
Input parameters of phase 2D software used under numerical modeling of soil slope section.
Table 7.
Summary of strength reduction factor value determined under finite element method.
Fig 5.
The effect of bench width on a factor of safety (D1S3).
Fig 6.
Effect of bench number on a factor of safety (D1S3).
Fig 7.
The effect of slope flattening on the factor of safety (D1S2).
Fig 8.
Effect of slope flattening on the factor of safety (D2S1).