Ground-water models with variable water density

The task of this sub-project was to establish, to test, and to verify the validity of, geohydraulic computer codes describing in terms of quantity the ground-water movement in a large area, taking into account strongly saline ground water. The applicability of these geohydraulic computer codes to natural conditions was examined by way of two-dimensional parameter studies modelling to a large extent the geohydraulic conditions in the Konrad mine. It was found that saline water modelling, in contrast to fresh water modelling, on an otherwise equal modelling basis, leads to results describing the ground-water movements to be less than in the fresh water models, and that these tendencies can be quantified for achieving a more exact model of the hydrogeological conditions. (orig./DG)