Publisher © Czech Geological Survey, ISSN: 2336-5757 (online), 0514-8057 (print)
Comparison of hydraulic conductivity of the whole rock and rock matrix of granites in the Bohemian Massif
Abstract
The aim of the hydrogeological research in granites is to gather a range of information on hydraulic properties of the rock matrix, hydraulic properties ofthe rock environment as a wholeand of their spatial variability. The results of the field hydrodynamic tests confirmed the significant heterogeneity of hydraulic properties of granite massifs. The average hydraulic conductivity in five-meter sections of three boreholes in the Melechov and Třebíč massifs and in the Moldanubic Pluton varies in the range of five orders of magnitude from 10-11 to 10-6 m.s-1. The laboratory measurements of rock matrix hydraulic conductivity show lower variability from 10-13 to 10-11 m.s-1. A comparison was made of the field and laboratory results. The primary results exhibit a linear correlation between hydraulic conductivity of the rock matrix and hydraulic conductivity of the whole rock.
