CHARACTERIZATION OF SHALLOW LANDSLIDE THROUGH RAINFALL MODEL

This study is identifies the characteristics of rainfall-induced shallow landslides. Experimental investigation has been performed by using flume laboratory which signify the real situation of shallow landslide setup through a rainfall model and the variation of the controlling soil parameters under various artificial rainfall conditions. A series of tests was conducted to trigger rainfall-induced landslides. A study on the sample soil is kept going in order to understand its properties which correlate the parameters setup. The variable controls or parameters are the intensity and duration of artificial rainfall. The sample type will be used in the experimental is commercial sand since the shallow landslides occur at this particular type of soil. The landslide triggering mechanism could be described in many ways. Firstly, the large porosity of sand will result high permeability and increase the rate of infiltration hence increase the pore-water pressure and reduced the shear strength of soil in inclination position. In addition the fine particles may condense deep into the sandy soil during the rainfall and create pressure which can cause shallow landslide at surface. Observation of failure phenomena details are taken to show the failure mode of shallow landslides. The results of these objectives will be clarify with the literature readings and analysis on the mechanisms will be compared to the objectives. The method of flume test is testing for the pattern of rainfall in term of its duration or intensity with relating to the ground water table and type of failures observation.
Keywords: Shallow landslides, Rainfall Duration, Rainfall Intensity