ABSTRACT
This paper presents a study on influence of slope inclination on the performance of slopes with and without soil-nails subjected to seepage. Centrifuge model tests were performed on 2V:1H (63.43°) and 5V:1H (79°) slopes with and without soil-nails at 30 gravities. All model slopes were instrumented and movable markers were digitised in order to get displacement vectors with rising ground water table. The model slope (unreinforced) with inclination of 63.43° was observed to be stable at 30 g till when the seeped water reached to toe of the slope. However, model slope (unreinforced) with inclination of 79° was noticed to fail as soon as it reached 30 g, before being subjected to seepage. Soil-nailed model slope inclined at 63.43° registered crest settlement of 3.13 mm. In comparison, model soil-nailed slope inclined at 79° experienced a crest settlement of 9.8 mm. The observed centrifuge model tests were found to match well with results of the Finite Element analysis.
