Abstract
It is necessary to clarify the phenomena of rain infiltration and the consequential effect of seepage upon slope stability, as slope failure of embankment due to rain is acompound problem of seepage and stability. The rain infiltration into embankment is influenced by soil factors such as type of soil and degree of compaction. It is also influenced by such factors as rainfall intensity or pattern and shape of embankment. These factors combine to create differences in pore water pressure, degree of saturation, even if the same amount of rain is infiltrated, and in influencing stability of embankment. Through the analyses of saturated-unsaturated seepage flow utilizing the full scale model test results, the influences of rain infiltration into embankment on slope stability under various conditions have been examined.
