NUMERICAL SIMULATION OF LOCALLY APPEARED SPRING WATER IN NON-UNIFORM SLOPES

Abstract

 Spring water which appears in the slope during heavy rainfall is widely known as one of the precursors of slope failure. On the other hand, conventional seepage analysis assuming the uniform field cannot express the condition of locally appeared spring water. In addition, during heavy rainfall, the pore air pressure increases with increasing saturation near the ground surface, and as a result, rainfall infiltration is suppressed, but this phenomenon is not considered in conventional seepage analysis. In this study, the mechanism of spring water and the effect of pore air at the time of heavy rain on non-uniform slope were examined by three-dimensional numerical simulation using a spatial distribution model of hydraulic conductivity.