According to the kinematic analysis result, the wedge mode of rock slope failure occurred at slope sections D1S2 and D1S3 though the planar mode of failure occurred at slope sections D1S4 and D4S1. Besides, the strength of the intact rock was determined by the Schmidt hammer in the field and point load laboratory test. ![]() ![]() Hence, this paper used Rocscience software to effortlessly and instantly compute cohesion and friction angle along specific failure planes and then to carry out kinematic and LEM analyses. The estimation of the most important input parameter in LEM analyses like cohesion and friction angle along the failure plane is often intricate and cumbersome. Thus, this study aimed at stability analyses of the critical slope sections using kinematic and limit equilibrium methods (LEM). As a result, the road was frequently damaged and blocked by the failed rock that in turn hinders the traffic activities. The effect of the problem was intense mostly during the rainy season, that triggers different modes of rock slope failure. The slope instability was one of the common problems along the road that connects Gutane Migiru town to Fincha sugar factory, Western Ethiopia.
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