Hydraulic parameters and solute velocities in triple-porosity karstic-fissured-porous carbonate aquifers: case studies in southern Poland

摘要: Rock and flow parameters of three karstic-fissured-porous aquifers in the Krakow-Silesian Triassic formations were measured using various methods compared. Though cavern fissure porosities are shown to be very low (cavern porosity below 0.5% fracture 0.2%), they contribute dominantly hydraulic conductivity (from about 1.3×10–6 11×10–6 m/s). Matrix (2–11%) is main water reservoir for solute transport or significant contributor specific yield (<2%). matrix much larger than sum porosities, its contribution total practically negligible (hydraulic from 5×10–11 m/s 2×10–8 On other hand, (for neglected porosities) when combined with tracer ages (or mean travel times) proper values (K) by applying following formula: K≅(matrix porosity×mean distance)/(mean gradient×mean age). Confirming earlier findings authors, this equation great practical importance because easily laboratory on rock samples, whereas usually remain unmeasurable.