| Summary: | Eydro-welt logging of natural ground water Ílory in sedimentary rocks by dilution method Michal Pitrák This work enlarges dilution rnethod, which is used to determine ground water flow. The diiution method is based on watef marker changes in time and deptň. Eiectrical resistivity probe together with NaCl marker are commonly used for dilution method. One of objectives of this work was attempting to substitute NaCl marker by food industry colorant. Food colorant was used to rnark entire borehole and ďso to create local (point) cloud of marker. Another aim was to validate usilge of portable well logging apparatus for dilution method, both for brine and for food colorant marking. Test measurements were realized in boreholes in different sedimentary basins of Czech republic. Two computer programs were developed for quick terrain data processing, ,,WR2LAS.. and,,VELCOM... Firs of them converts logged data to internationď data format LAS. Files of LAS f,orrnat &re easy imported to eny commerciď processing soťtware, as used "GdBase." Thanks to quick conversion of data it is possible to draw logging graphs directly in terrain and adapt next measuring to present results. Next developed program,,VELCOM' serves for interactive and graphics determination of horizontal flow velocity. Dilution logs and times of its...
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