ABSTRACT
ABSTRACT: After a short overview on characterization techniques, the concept of the Aquifer Analogue Approach to fractured porous media is presented. In contrast to consolidated rocks of low permeability (e.g., granite), fractured porous materials show significant storage and matrix conductivity. To investigate these characteristics, flow and transport of fractured porous sandstone materials were examined on different scales. On the laboratory scale tomographical and single well experimental set-ups based on gas flow measuring techniques were developed and applied for the characterization of different size fractured sandstone samples ranging from approx. 0.02 m3 to 1 m3. These methods distinguished flow and transport occurring in the porous matrix and in the fracture network. For the derivation of actual hydraulic parameters, a travel time based tomographic inversion approach was developed. These techniques were implemented to investigate a larger fractured sandstone block (approx. 200 m3) with pneumatic and hydraulic flow and transport experiments.
