Technical Report NTB 85-31
Model calculation of the groundwater flow at Oberbauenstock
Model calculations of the groundwater flow at a potential site for an intermediate-level waste repository at Oberbauenstock in the Swiss prealps have been performed. The study comprises two steps; modelling of the position of the groundwater table and modelling of the groundwater flow in the host rock.
The calculations in the first case indicate that much of the sedimentary rock above the host rock is partially drained. The highest groundwater table obtained is about 100 m above the surface of the host rock.
The second step shows that the flow through the host rock is directed downwards. Because the quantification of flow rate etc. is very sensitive to boundary conditions, it is deemed essential that a thorough understanding of the hydrology of the site be developed.
