數値解析에 의한 降雨時의 浸透 特性 = Infiltration Characteristics during Rainfall

다국어 초록 (Multilingual Abstract)

The annual rainfall in Korea is about l,153mm and more than 2/3 of the annual rainfall occurrs during summer season. During rainfall, extensive landsliding is followed over the sloping areas. The occurrence of landsliding in the sloping areas is due to increment of saturation of the soil by surface infiltration and ground water during rainfall.
If the rainfall intensity is greater than the saturated hydraulic conductivity of the soil, a pond of water or surface runoff on the soil can be resulted. The static water pressure of surface runoff or ponding water influences infiltration characteristics.
The aim of this study is to understand the infiltration characteristics of unsaturated soil during rainfall.
In order to investigate the effects of rainfall on the infiltration characteristics, it is assumed that the soil consist of Del Monte fine sand. Some interesting problems involving unsaturated flow are analyzed numerically by UNSAT2 program based on Galerkin's weighted residual method.