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Groundwater circulation in the Miechów Trough and the central part of the Carpathian Foredeep (Poland): a hydrogeological conceptual model

Dendys M., Szczepański A., Tomaszewska B.

Geologos

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2018

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Vol. 24, No. 3

177--187

EN

The Miechów Trough and the central part of the Carpathian Foredeep in southern Poland have a highly complex geological structure and numerous fault zones. These features play a significant role in hydrogeological conditions of the area. In this area drinking water, medicinal groundwater or thermal groundwater occur, so recognition of their circulations is basic for reasonable groundwater management. In this note, a hydrogeological conceptual model, created for the purpose of regional scale mathematical modelling, is presented. This conceptual model illustrates the geology of the hydrogeological system modelled, as well as hydrogeological conditions and characteristics of groundwater circulation, as determined by tectonics. Typical of the research area is the wide diversity of geological and hydrogeological conditions. The Busko-Zdrój area, a region with a long history of exploitation of medicinal groundwater, presents the best example.

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Modelowanie wód podziemnych na terenach górniczych z wykorzystaniem oprogramowania FEFLOW

Sitek S.

Przegląd Geologiczny

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2017

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Vol. 65, nr 11/3

1451--1459

EN

Development of groundwater flow, and solute and heat transport models for underground and open-pit mining areas is a challenging and very complex issue. Despite the fact, models play an increasingly common role in mine water management. The aim of the paper is to present and illustrate theoretical aspects and practical strategies facilitating groundwater model set-up for mine sites by means of FEFLOW software. FEFLOW solved governing equations based on finite elements methods, which enables users to create models with very flexible meshing strategies including time-varying geometries. Unstructured and structured mesh generators allow creating very complex geological settings and with complex geometrical designs, as found for example in mine dewatering (open-cast geometry, inclined dewatering wells, inclined faults), or underground structures (pipes, tunnels, shafts etc.). In order to obtain reliable results and reduce uncertainty in provided forecast for mine sites, groundwater models often should be developed for transient condition and involve unsaturated flow and transport, fracture flow, density effects, chemical reactions, or time-varying behaviour of boundary conditions and material properties (such as conductivity or porosity). FEFLOW enables groundwater modeller set-up these all physical processes and via plug-ins extended functionality by integrated FEFLOW models with other models: geochemical (PHREEQC), watershed (MIKE 11, Hydro River) or develop user own plug-ins. Considering the above, FEFLOW seems to be appropriate software for accurate and reliable models developmentfor mine sites, and an interesting alternative for more widely used MODFLOW models in Poland.

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Szczegółowy model struktury 3D zbiornika GZWP Gliwice nr 330

Sitek S., Kowalczyk A., Małolepszy Z.

Biuletyn Państwowego Instytutu Geologicznego

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2009

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nr 436, z. 9/2

463-468

PL

Tworzenie wielowarstwowych modeli numerycznych w systemach krasowo-szczelinowych napotyka na duże problemy n wiarygodnym odwzorowaniu układu krążenia wód podziemnych, już na etapie modelu koncepcyjnego. Sposób przedstawiania geometrii ośrodka hydrogeologicznego w oparciu o dwuwymiarową mapę geologiczną, wybrane przekroje i otwory geologiczne bez szczegółowej interpretacji wgłębnej, często skomplikowanej budowy geologicznej, może być niewystarczający. Zastosowanie nowoczesnych metod trójwymiarowej kartografii do przedstawienia wgłębnej budowy geologicznej, przy wykorzystaniu specjalistycznego oprogramowania typu Earth Vision pozwalana lepsze jej odwzorowanie i zrozumienie. W pracy opisano wykonany model budowy geologicznej wielowarstwowego systemu wodonośnego, którego głównym elementem jest GZWP Gliwice, o powierzchni 392 km2, wyodrębniony w węglanowym kompleksie wodonośnym triasu. Możliwość odwzorowania struktury geologicznej zbiornika, w tym w szczególności licznych rowów i zrębów tektonicznych, wpłynie znacząco na poprawność dyskretyzacji ośrodka hydrogeologicznego w modelu przepływu wód podziemnych FeFlow.

EN

Construction of multilayer numerical models in a karst-fractured medium creates big difficulties in the correct and credible presentation of groundwater flow systems. Presentation of geometric groundwater medium using data from 2D geological maps, bore holes and geological cross-sections can be insufficient without acute interpretation of deep geological structure. Applications of new techniques of computer 3D geological modelling helps better mapping and understand deep geological structure. In the paper 3D geological model of MGWB Gliwice is presented. Geological model has been developed using Earth Vision software. Possibility of presenting 3D hydrogeological formation in geological structure model with many horsts and grabens separated by faults will be have significantly influenced on correctness digitizing hydrogeological medium structure in the flow model FeFlow.

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Pozyskiwanie danych do modelowania przepływu wód podziemnych na obszarze leja depresji BOT KWB Bełchatów S.A.

Szczepiński Jacek, Górski Grzegorz, Stachowicz Zbigniew, Szczepanik Paweł

Geologos

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2006

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Vol. 10

263--270

EN

The paper presents problems related to data availability for the ground water flow modeling in the region of the Bełchatów lignite mine. The U.S. Geological Survey’s program MODFLOW was used to reconstruct past and to present the existing conditions in the aquifers within the Bełchatów lignite mine influence. Ground water and surface water monitoring system which enables to assess changes of hydrodynamical and hydrological conditions in the region as well as methods which make possible to obtain additional hydrogeological parameters were discussed. The means in which data are collected and processed were presented.