Abstract
To contribute good understanding of geo-hydrogeological structure in and around the Koongarra uranium deposit, the borehole TV logging and the three dimensional groundwater flow analysis were conducted. The results of the borehole TV measurement showed directional trends in the schistosity represented folds which were the most characteristic structure in the site scale. This fold structure was in accord with the directional trends in fracture and fracture frequency, and the axes of the interference test drawdown. The three dimensional ground water flow analysis was taken into account the hydraulic anisotropy which derived from the assumption that the direction normal to schistosity agree with minimum hydraulic conductivity. The result of analysis showed that directions of ground water flow agreed with drawdown axes, and the conceptual model of hydrogeological structure governed the site scale fold was verified.
