Vertical variations in permeability of flysch rocks in the Czechoslovak Carpathians

Jan Jetel

Abstract


Some general features of permeability distribution in flysch rocks are characterized. In a greater part of flysch regions, the near-surface zone reaching (on the regional average) to the depth of about 30 - 40 m. represents the major aquifer in flysch rock massif. Regularities in vertical distribution of permeability are quantitatively documented by results of regional evaluation of data from water injection tests (water pressure tests) carried Out in the Godula Member in Czechoslovakia. The evaluations give the basis for statistical predictions of permeability, hydraulic conductivity and transmissivity distribution in the studied rocks. It can be assumed that very similar regularities should be expected in other lithostratigraphic units of the Carpathian flysch.


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