Hydrogeochemical methodology for constructing site descriptive models within the Swedish site investigation programme

摘要

Site studies for SKB's programme of deep geological disposal of nuclear fuel waste currently involve the investigation of two locations, Forsmark and Laxemar-Simpevarp situated on the eastern coast of Sweden, to determine their geological, hydrogeochemical and hydrogeological characteristics. Present work describes hydrogeochemical methods such as conceptual postglacial modelling, explorative analysis, mathematical modelling and construction of site descriptive models. The sampled groundwaters reflect to various degrees processes relating to ancient to modern water/rock interactions and mixing. The major conclusion is that changes from glacial rebound and hence hydrogeology seems to have a major influence on the groundwater chemistry.These complex data require therefore a multidisciplinary approach to their interpretation.