COMPARISON OF SLOPE STABILIZATION ANALYSIS METHOD BY USING CHANGING GEOMETRY AND SOIL NAILING FOR SLOPE FAILURE

Abstract

Slope stability analysis is the process of analysing the stability and safety of a particular slope, assuring that the pertaining slope is safe for the human surrounding and any related construction activity. SLOPE/W of Geostudio software was utilised in this study to determine the factor of safety (FOS), both before and after slope stabilisation work was applied. Laboratory tests such as the Atterberg Limit, Moisture Content, Sieve Analysis, and Hydrometer tests were carried out to determine the physical characteristics and parameters of the slope. From Ordinary and Spencer methods, the slope's FOS values before stabilisation were 2.965 and 2.985. Then, using Changing Geometry method, both FOS was increased to 4.536 and 4.632, respectively. The same slope was analysed using Soil Nailing, and the FOS value were results 3.972 and 4.205 for Ordinary and Spencer's methods, respectively.

Keywords: Slope stabilisation, Factor of Safety (FOS), SLOPE/W, Ordinary Method, Spencer Method, Changing Geometry, Soil Nailing