Combined one dimensional infiltration and slope stability modelling / Che Adanan Taib

Remarkable progress has been made in the study of landslides. However, there were much more to be done with the case of saturated soil. This thesis will discuss the failure of unsaturated soil slope with the influence of rainfall infiltration. Since most the slope failure occur during rainfall, K.L. - Karak Highway slopes have been selected as the 'subject' of study. Nine samples from nine different slopes were taken to the laboratory for research purpose. An attempt has been made to recognize the causes of failure. A slope in ITM was also incorporated in this study with the required data which have been obtained by previous student. Since the rainfall infiltration is of utmost concern, a combined infiltration and slope stability model was developed. Using the model, the stability of study slopes were predicted at the longest duration of rainfall allowed by DID design manual (72 hours). Such model could be a useful tool in the prediction of stability of unsaturated soil slope.