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Wykorzystanie potencjału wód siarczkowych : inwestycja w przyszłość regionu tarnobrzeskiego

Sokołowski Jakub, Gągulski Tomasz, Zdechlik Robert, Wątor Katarzyna

Przegląd Geologiczny

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2023

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Vol. 71, nr 12

620--630

EN

Long-term exploitation of sulphur deposits in the Tarnobrzeg region, along with intense groundwater drainage, caused a change in hydrodynamic and hydrogeochemical conditions. After the mining activities had been completed, the area was reclaimed, causing a return to near-natural conditions. Chemical tests of the groundwater of the Neogene aquifer in the area of Tarnobrzeg Lake were performed. The results showed that this area is prospective for the extraction of mineralized sulphide waters and their use in balneotherapy.

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Delineation of wellhead protection area based on the analytical elements method (AEM) – a case study with comparative research

Nikiel Maciej, Zdechlik Robert

Geology, Geophysics and Environment

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2022

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Vol. 48, no. 4

335--352

EN

The delineation of protection zones for groundwater intakes is a difficult task resulting from the significant variability of regional and local environmental conditions. Different methods are used, both simple (analytical or graphic), giving estimated results, and the most reliable, but also the most time-consuming ones, based on numerical groundwater flow models. An alternative method for the delineation of protection zones is the analytical elements method (AEM), which gives solutions like those obtained using FDM/FEM modelling methods with a relatively low degree of complexity. The estimated ranges of protection zones obtained with the use of four methods are presented for the selected test area (groundwater intake around Olesno). Results obtained with the use of the FDM model were taken as reference and CFR and SimpleWHPA were used as simplified methods. Comparative studies indicate that the results obtained by the CFR method differ significantly from the results of other methods, and their reliability is low. The results of the SimpleWHPA method are satisfactory, given the relative simplicity of the method. On the other hand, the results obtained with the AEM are close to the results obtained with the FDM treated as a reference. Considering that AEM is less time-consuming than FDM (which requires the most effort for proper model preparation), the use of AEM in the practice of protection zone delineation seems to be an interesting alternative.

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The FEM model of groundwater circulation in the vicinity of the Świniarsko intake, near Nowy Sącz (Poland)

Zdechlik Robert, Kałuża Agnieszka

Geologos

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2019

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Vol. 25, No. 3

255--262

EN

Modern hydrogeological research uses numerical modelling, which is most often based on the finite difference method (FDM) or finite element method (FEM). The present paper discusses an example of application of the less frequently used FEM for simulating groundwater circulation in the vicinity of the intake at Świniarsko near Nowy Sącz. The research area is bordered by rivers and watersheds, and within it, two well-connected aquifers occur (Quaternary gravelly-sandy sediments and Paleogene cracked flysch rocks). The area was discretized using a Triangle generator, taking into account assumptions about the nature and density of the mesh. Rivers, wells, an irrigation ditch and infiltration of precipitation were projected onto boundary conditions. Conditions of groundwater circulation in the aquifer have been assessed based on a calibrated model, using water balance and a groundwater level contour map with flow path lines. Application of the program based on FEM, using smooth local densification of the discretization mesh, has allowed for precise mapping of the location of objects that significantly shape water circulation.

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Ocena warunków hydrogeologicznych w międzyrzeczu Kurówki i Bystrej (rejon Puław)

Zdechlik Robert, Pietrzak Paula

Biuletyn Państwowego Instytutu Geologicznego

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2019

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nr 475, Hydrogeologia z. 16

245--252

PL

Badania przeprowadzono w celu oceny warunków hydrogeologicznych pierwszego poziomu wodonośnego w rejonie na wschód od Puław, na obszarze międzyrzecza Kurówki i Bystrej. W ujęciu regionalnym wody podziemne krążą w obrębie pozostających w łączności hydraulicznej pięter wodonośnych: czwartorzędowego, czwartorzędowo-kredowego i kredowego, przy czym dominującą rolę odgrywa piętro kredowe. Rzeki ograniczające obszar mają charakter drenujący i determinują układ pola hydrodynamicznego. Podstawą oceny warunków hydrogeologicznych były własne badania terenowe, obejmujące w 200 studniach pomiary głębokości do zwierciadła wody oraz oznaczenie właściwości fizykochemicznych wód, a z wytypowanych studni dodatkowo pobór próbek do szczegółowych badań laboratoryjnych. Oznaczone w wodach ze wszystkich studni wartości właściwości fizykochemicznych (pH, PEW i temperatury) zasadniczo mieszczą się w zakresie dopuszczalnym dla wód do spożycia. Wyniki szczegółowych oznaczeń laboratoryjnych makro- i mikroskładników w wodach podziemnych wskazują na przewagę słabego stanu chemicznego (6 punktów), w porównaniu do stanu dobrego (2 punkty). W odniesieniu do normatywów dla wód do spożycia, kryteria spełniają wody z 3 punktów, podczas gdy w 5 punktach wymogi nie są spełnione.

EN

The research was carried out to assess the hydrogeological conditions of the first aquifer in the area between the Kurówka and Bystra rivers, east of Puławy. In regional terms, groundwater circulates within the hydraulically connected Quaternary, Quaternary- Cretaceous and Cretaceous aquifers, with the Cretaceous aquifer playing a dominant role. Rivers that limit the area are of a draining nature, determining the system of the hydrodynamic field. The assessment of hydrogeological conditions was carried out based on own field tests including the measurement of the depth to groundwater table and the determination of physicochemical properties in 200 wells, and collecting additional water samples for detailed laboratory tests from selected wells. The values of physicochemical properties (pH, PEW and temperature), determined in the water from all wells, are generally within an acceptable range of values for drinking water. The results of detailed research on chemical composition of groundwater indicate the dominance of the poor chemical status (6 points) over the good chemical status (2 points). Based on the norms that determine the quality of water for human consumption, only 3 out of 8 points meet the requirements.

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Kilka uwag o modelowaniu matematycznym zlewni Raby

Duda Robert, Zdechlik Robert, Paszkiewicz Magdalena

Geologos

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2006

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Vol. 10

47--56

EN

The paper describes methodology of hydrogeological modelling of Raba river watershed, about 1565 km2 area, in flysch Outer Carpathians. Hydrodynamic model was a first step in procedure of point out groundwater bodies threatened with the risk of not achieving the European Water Framework Directive environmental aims. There was accepted conceptual model of recharge and groundwater circulation in fissured-porous sandstone-shale material, assuming that groundwater circulation could be reduced to a one aquifer in surface part of flysch rocks, connected with quaternary river valleys. There was adopted effective infiltration coefficient of selected types of surface material. There was pointed the importance of comparison the recharge defined by the infiltration method with underground runoff to rivers described by Wundt-Kille hydrological methodology. There was mentioned the effect of model scale on the precision of hydrogeological conditions projection.