ABSTRACT
The slope stability issues concerning rainfall induced landslides have been investigated and are presented. The results of numerical analyses performed using a two-dimensional finite element code for unsaturated seepage are used in determining the decrease in soil suction during infiltration as well as the development of positive pore pressures. Infinite slope analysis is used to develop an expression for the stability of long slopes that depends on the pore pressure profile. A comprehensive method of analysis is presented that calculates the time and depth of failure and gives information on the type of triggering mechanism that will occur based on the soil, slope, and rainfall parameters.
