Determination of Dominant Factors Controlling Initiation of Shallow Slide

Water-induced landslide process is one of the factors that led to shallow landslide. It is commonly caused by rainfall infiltration due to increase in pore-water pressure and decrease of matric suction within the slope. In order to determine the dominant factors controlling initiation of shallow slide in sandy soil, a few soil properties tests and a model slope subjected to rainfall infiltration was developed and employed to perform experiment on sandy soil. The parameters that the author uses are the intensities of the rainfall. During the experiment, the pore water pressure and the matric suction of the surfaces will be measured. The failure mechanism and the response of pore water pressure and surface tension will be observed and discussed. The failures of the soil happen when the sandy soil had a mark decrease in matric suction during the rainfall drop on the slope surface.