Abstract
Analysis and assessment of the slopes stability are an important in geotechnical engineering for all the times. The paper deals with the assessment of slope stability in fine-grained soils. The influence of change in shear strength parameters on the factor of safety has been studied. The factor of safety can be correctly obtained only if the critical failure surface of the slope is accurately identified and shear strength parameters are correctly. To investigate effect of soil strength parameters on the factor of safety, different values of shear strength parameters: cohesion (c), internal friction angle (ϕ), were chosen. The calculation and assessment of slope stability was made using methods which assume a circular shape of the slip surface (Bishop and Petterson method) and methods that consider the polygonal shape of the slip surface (Spencer and Janbu method). We analyzed the impact of shear strength parameters of the resulting factor of slope stability of fine grained soil. The results of the study showed that the factor of safety of the slope changes with varying cohesion c and internal friction angle ϕ.
Highlights
Analysis and assessment of the slopes stability are an important in geotechnical engineering for all the times
We analyzed the impact of shear strength parameters of the resulting factor of slope stability of fine grained soil
2 Methods used for slope stability analysis
Summary
Analysis and assessment of the slopes stability are an important in geotechnical engineering for all the times. Climatic factors combined with the erosion activity water courses and groundwater are major causes of slope deformations. Slopes saturated with water have become prone to landslide. Different values of shear strength parameters are caused floods. The factor of safety can be correctly obtained only if the critical failure surface of the slope is accurately identified and shear strength parameters are correctly. Geologists determine recommended dispersion of values, which may cause inaccuracies in calculation and assessment of slope stability. We analyzed the impact of shear strength parameters of the resulting factor of slope stability of fine grained soil
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