Abstract
Geological and hydrogeological research conducted in the area of groundwater source "Kljuc" of the city of Pozarevac aimed primarily for determining the groundwater's balance amd reserves. The study groundwater source is used for water supply of about 55 000 inhabitants in the Branicevo district, with a total capacity of approximately 250 l/s. As part of the applied field hydrogeological methods in the study area, by its significance the method of Step-Test pumping, can be singled out. The data from the groundwater source obtained in this way were processed by graphoanalytical method of processing experimental pumping data in transient flow regime, ie application of Theiss solution of differential flow to define hydraulic parameters of well (hydraulic losses in well and filter zone), filtration parameters of the medium and maximum allowed capacities of the well. Hydraulic losses that occur mainly indicate the aging process of wells which usually results in a decrease in their capacity.
Highlights
Vrednost specifične izdašnosti izdani se može dobiti samo na osnovu podataka koji se odnose na pijezometre
The data from the groundwater source obtained in this way were processed by graphoanalytical method of processing experimental pumping data in transient flow regime, ie application of Theiss solution of differential flow to define hydraulic parameters of well (hydraulic losses in well and filter zone), filtration parameters of the medium and maximum allowed capacities of the well
Summary
Racionalno projektovanje i eksploatacija podzemnih voda pre svega podrazumeva definisanje osnovnih hidrogeoloških parametara koji definišu geometrijske i filtracione karakteristike posmatrane izdani ali i uslove koji vladaju na granicama izučavanje oblasti. Sređivanjem jednačina 4 i 5, dolazi se do izraza pomoću kojeg je moguće izračunati koeficijent vodoprovodnosti izdani, interpretacijom registrovanih podataka opitnog crpenja [3]: 0.183Qb logt2−logt S2−S1. Analizirajući prethodnu jednačinu, moguće je zaključiti da veličinu hidrauličkog gubitka u bunaru i prifilterskoj zoni, kao i vrednost specifične izdašnosti izdani, nije moguće odrediti samo na osnovu podataka praćenja opitnog crpenja na bunaru. Vrednosti specifične izdašnosti izdani se mogu dobiti interpretacijom podataka registrovanih tokom opitnog crpenja na pijezometru na dva načina. Na osnovu toga proizilazi zaključak da se na osnovu interpetacije podataka opitnog crpenja, i za bunar i za pijezometre, može izračunati vrednost koeficijenta vodoprovodnosti. Vrednost specifične izdašnosti izdani se može dobiti samo na osnovu podataka koji se odnose na pijezometre. Za podatke drugog i trećeg sniženja koristi se metoda obrade kompletnog hidrograma, u literaturi poznata kao metoda Tajsa [16]
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