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O potrzebie uwzględniania zasysania w praktycznych zagadnieniach filtracji wody podziemnej

Hauryłkiewicz J.

Przegląd Geologiczny

2018

Vol. 66, nr 8

481--482

Seven examples of issues have been pointed out, when one should take into account the suction exerting on groundwater by capillary attraction from fine sands or similar other fine soils.

Wykorzystanie modelowania matematycznego do oceny migracji intensywnie zabarwionych wód w rejonie ujęcia Joanka k. Poznania

Dragon Krzysztof, Górski Józef, Marciniak Marek, Kasztelan Dariusz

Geologos

2006

Vol. 10

35--46

The article describes an experiment involving pumping of groundwater from specific sections of the aquifer with a packer. The aim of the experiment was to identify the vertical differentiation of groundwater chemistry of the Wielkopolska Buried Valley Aquifer near Joanka well-field in order to explain the reasons for the occurrence of "brown water”. The research shows significant vertical and horizontal differences in groundwater chemistry. It has been found that “brown water” occurs in the lower part of the aquifer and its chemistry and isotopic composition imply origin from the Tertiary aquifer. It has been proved that the flow of “brown water” from Tertiary aquifer to the Wielkopolska Buried Valley Aquifer is possible through the old wrongly constructed well which was build before World War II. The hydrochemical data have been used to calibrate groundwater flow and contaminant transport model. This model has been used to determine the prognosis of “brown water” migration during well-field exploitation.

Problem zasobów odnawialnych wód podziemnych w wielowarstwowych systemach wodonośnych na przykładzie Regionu Gdańskiego

Jaworska-Szulc Beata

Geologos

2006

Vol. 10

91--100

In multilayered aquifer systems establishing renewable resources for individual aquifers is a compound problem. The renewable-ness coming mainly from the effective infiltration is taking place directly in the first layer. However the part of these waters indirectly is powering deeper layers as a result of soaking through by semi permeable series dividing aquifers. In the article, on the basis of the regional model of the Gdańsk aquifer system, renewable resources for individual aquifer was analysed. In the Gdańsk region the groundwater appears in Cretaceous, Paleogene-Neogene and Quaternary formations. They create the multiaquifer system.

Numeryczny model filtracji nieustalonej dla fragmentu doliny Wisły w rejonie ujścia rzeki Świder

Gruszczyński Tomasz, Małecki Jerzy J.

Geologos

2006

Vol. 10

65--74

Groundwater flow in river valley aquifer is shaped by stresses, which intensity is variable during time. In this case high accuracy of mathematical model demands calculations for transient flow. In this convention was executed model of groundwater flow for the part of the Vistula river valley (central Poland). Aquifer is built of sandily-gravelly sediments of high permeability, which thickness arrives at 40 meters. A numerical finite difference model were built using Visual Modflow software. Discretization of the space in the horizontal surface was executed by orthogonal net, divisive the area on square blocks of 10 meters side length. It were distinguished 10 layers of diverse thickness. Oscillations of surface water level and distribution of recharge were treated as the main criterion for stressperiods marking. After putting of all parameters model was calibrated. The main result of calculations is the spatiotemporal variability of the hydrokinetic state of the aquifer, what gave the base for mass balance computation.