Comparison of safety factor and geosyntetic reinforcement requirement for slope stability using 2-D and 3-D analysis method

The analysis of landslide slope stability since 1960s is the development a 2-D structure proposed by various experts, through 3-D method. Most these previous studies stated that ratio and safety factors was more than one for cohesive less non-cohesive soils. These were because several required reinforcements affected factors, with analytical differences methods causing distinction in requirements. further cause problems underestimating or overestimating design. Therefore, this study aims to determine comparative on reinforcements. analyses structures carried out using LEM Fellenius Hovland, respectively. comparison also conducted geotextile Tult = 200 kN/m. results showed between relatively similar homogeneous Meanwhile, reinforcement needs different heterogeneous Under certain conditions, need greater lesser 3-D. In addition, difference 1-8 layers geotextile, depending soil parameters, slope, length field.