Umudike Journal of Engineering and Technology

The stability of eroded slopes found at Nkwonta in Isuikwuato Local government of Abia State were assessment using limit equilibrium model with Slide software. Stability of natural slopes found in the study area were analyzed for drained condition, four different sections of the slopes were analyzed for their factors of safety with different limit equilibrium methods. The factor of safety was below 1.0. For attaining a safer and a stable slope, the desirable factor of safety of the slope is taken as 1.50. The slopes were also analyzed with respect to the various materials which were provided for their stabilization which includes soil nailing and geo-textiles. This was done with several trial sections until an acceptable factor of safety (FS above 1.5) was achieved. The result obtained from the analysis using the manual calculation is approximate to the software result. Also the different methods employed in stability analysis of the erosion slope shows that the Spencers and Morgenstern price methods gives approximate factors of safety.