Abstract
In order to investigate the influence of drainage well on the behaviour of groundwater seepage and pore water pressure in slope, the finite element analyses using saturated-unsaturated seepage were performed on the model slopes of four types soil layers with any given conditions of rainfall and groundwater inflow. The obtained effects of drainage well on the behaviour of pore water pressure in four different types of slopes are discussed by a detailed look at the different types of soil profile, the variation of vector due to rainfall and inflow to the reference section in the slope, and the variation of pore water pressure with elapsed time. In adittion, we made slope stability analyses by using the results of seepage analyses.