特性曲線法

In recent years numerical simulation of groundwater (soil water) has become a major part of many projects dealing with groundwater exploitation, protection and remediation of soils and groundwater. When the groundwater or soils are contaminated, a lot of physical－chemical properties of aquifer affect flow and transport of contaminant. Particularly, hydraulic conductivity changes groundwater flow. Therefore, examination of difference caused by distribution of hydraulic conductivities is extremely significant. In this paper, four case studies were executed and discussed about contaminant transport and concentration change in the wells under contaminant water pumping or no water pumping, steady State condition. As a result of this study, it was confirmed that dispersion of contaminant, flow velocity vector distribUtion and concentration change in the wells were affected by the hydraulic conductivity distribution, obviously. This fact means that the spatial distribution of hydraulic conductivity should be carefully examined, when we try to take countermeasure of groundwater or soils pollution, even if the numerical model has limitation and uncertainty.. And, in the well of which the water pollution was detected, the origin of pumping water should be specified using numerical model.