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Program badań dla określenia potencjału geotermii niskotemperaturowej bazującej na wodach podziemnych Małopolski

Mazurkiewicz J., Kmiecik E., Tomaszewska B.

Technika Poszukiwań Geologicznych

2013

R. 52, nr 2

45--58

Małopolska posiada potencjalne zasoby niskotemperaturowej energii geotermalnej, której wykorzystanie może przyczynią się do zrównoważonego rozwoju regionu. Wynika to z możliwości zagospodarowania zasobów zwykłych wód podziemnych, występujących na głębokości do około 500 m p.p.t., których temperatura na wypływie z ujęcia jest niższa od 20°C. W pracy scharakteryzowano warunki geologiczne i hydrogeologiczne analizowanego regionu i zaprezentowano podstawowe założenia dla programu badań ukierunkowanego na określenie możliwości wykorzystania wód podziemnych, w niskotemperaturowych systemach energetycznych, wspomaganych pompami ciepła. W kolejnym etapie prac, szczegółowej ocenie poddane zostaną parametry hydrogeologiczne i hydrogeochemiczne (w tym termiczne) w poszczególnych zbiornikach wodonośnych oraz uwarunkowania sozologiczne badanego regionu. Podjęte działania pozwolą na wskazanie obszarów najbardziej perspektywicznych dla wykorzystania w geotermii niskotemperaturowej.

Malopolska region has the low-temperature geothermal resources, which usage may contribute in the development of the region. This results from the potential of usage of groundwater resources, occurring at a depth of approximately 500 m below the ground. At that depth the temperature outlet of the intake is lower than 20°C. This paper contains an analysis of geological and hydrogeological conditions of the studied region and the basic principles for a research program, which is focused on the possibility of use of groundwater in the low-temperature energy systems based on heat pumps. In a further stage the hydrogeological and hydrogeochemical parameters in various reservoirs and sozological conditions will be evaluated. The analysis will identify the most promising areas in this regard.

Warunki hydrogeologiczne Pojezierza Myśliborskiego i obszarów sąsiednich w granicach jednolitej części wód podziemnych nr 23

Wiśniowski Z.

Przegląd Geologiczny

2010

Vol. 58, nr 8

704-711

The area of the GWB (groundwater body) No. 23 is a part of West Pomeranian and Lubusz Voivodeships and the water region of the Lower Odra and Przymorze Zachodnie. It includes districts: gryfiński, myśliborski, pyrzycki and gorzowski. The geological conditions of the study area are visibly corresponding to the deep tectonic structures of Szczecin basin and Gorzów block. Fresh groundwater is occurring here in porous sediments of the Quaternary, Neogene and Paleogene and fissured-porous rocks of the Upper Cretaceous. In the area of Szczecin basin, structures of Cretaceous aquifers are associated with Mesozoic secondary anticlines. In the Odra valley the aquifers are constituted from shallow laying Quaternary sediments (depth: 10 to 50 m). Thickness of Upper Cretaceous marbles leading fresh water does not exceed 30 m. The primal structures of the youngest sediments of Neogene- Miocene (-50 to -80 m above sea level) were disrupted during the earlier glaciations. During this geological period many of the geomorphological forms - egzaration depressions and glacitectonic extrusions formed from the Paleogene and Neogene sediments, and also elevations built from xenoliths coming from deeper rock bed, were formed by the complex of different geomorphological processes. The sediments of Neogene-Miocene have variable thickness, from a few meters within the deep erosion structures, up to 200 m within the Tertiary elevations. The Quaternary aquifers occur in multilayer system of groundwater layers constituted by fluvioglacial and fluvial sedimentation (sand and gravel) during successive glaciations and interglacials. Aquifers are often divided in multiple different layers, isolated by low-permeable layers of clays or glacial silts and proglacial clays. There are selected few regional aquifers: four Quaternary aquifers - first unconfined; upper, interior and lower intertill aquifers; two Miocene - upper and lower aquifers and one Cretaceous aquifer. The thickness of individual aquifer is variable; it's locally up to 50 m. The GWB No. 23 aquifers were aggregated to 3 levels (hydrogeological zones) belonging to different systems of groundwater flow: I level - first unconfined and upper intertill aquifer (locally Cretaceous aquifer); II level - interior intertill aquifer; III - lower intertill aquifer and upper Miocene aquifer. Because of the multilayer character, the GWB No. 23 groundwater system is very rich in water.