Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: pobór wód podziemnych

Sortuj według:

Ogranicz wyniki do:

Ocena możliwości wykorzystania rezerw zasobów dyspozycyjnych wód podziemnych do łagodzenia skutków suszy w rolnictwie

Herbich Piotr

Biuletyn Państwowego Instytutu Geologicznego

2019

nr 475, Hydrogeologia z. 16

51--57

Na podstawie danych z bazy GIS Mapy Hydrogeologicznej Polski w skali 1:50 000 ustalono optymalne warunki dla intensywnego poboru wody studniami wierconymi z poziomów wodonośnych podczas długotrwałej suszy hydrologicznej na obszarze pasa nizin środkowopolskich o najniższych w kraju opadach atmosferycznych i głębokich niedoborach wody na terenach upraw rolnych w okresie suszy. Zależnie od warunków hydrogeologicznych i rodzaju gleb, pobór z pojedynczej studni może w okresie głębokiej suszy hydrologicznej pokryć wysokie niedobory wody na terenach upraw rolnych na powierzchni najczęściej 15–50 ha, natomiast czas odbudowy retencji sczerpanych zasobów w ujętym poziomie wodonośnym wyniesie najczęściej 1–5 lat.

Based on the GIS database for the 1: 50,000 Hydrogeological Map of Poland, the optimum conditions have been established for intensive water abstraction by drilled wells from aquifers during a long-lasting hydrological drought in the central regions of the Polish Lowlands. It is the area of country’s lowest precipitation and high water deficits for agriculture during droughts. Depending on the hydrogeological conditions and the type of soils, water abstraction from a single well can cover high water deficit for agriculture during a period of deep hydrological drought in an area of most frequently 15–50 hectares. The time of retention recovery in the aquifer for depleted resources will usually be 1–5 years.

Groundwater and mass transport modelling for documentation and protection of groundwater resources

Nawalany M., Przybyłek J., Staśko S.

Przegląd Geologiczny

2010

Vol. 58, nr 9/1

816-823

Short history of mathematical modeling of groundwater flow and transport in Poland is described. It shows brilliant and long tradition of this advanced aspect of hydrogeology. Mathematical modeling has been extensively used in Poland for years in solving practical problems concerning mainly groundwater abstraction, protection of groundwater resources and, recently, as a routine tool for environmental impact assessment whenever groundwater is involved. Use of numerical models in documenting groundwater resources and conditions of their restoration within regional water balance units are recalled. In particular - documenting admissible volumes of groundwater to be abstracted including wells operating in river valleys, determining protection zones for water supply wells and groundwater reservoirs, in particular for major groundwater basins (in Polish: GZWP), investigating optimal ways of abstracting fresh groundwater in areas where mineral waters occur, investigating alternative groundwater sources for supplying large agglomerations. Three examples: defining changes in groundwater chemical composition in conditions of intensive anthropogenic stress on the environment - impact from urban and industrial waste landfills, agriculture, transportation and municipal facilities on groundwater; coexistence of fresh and mineral waters and, finally, quantitative assessments of impacts from open-pit mines on groundwater in the mining stricken area are described in more detail. Last paragraph of the paper is a future looking assessment of aspects of mathematical modeling in Polish hydrogeology that need to be further developed. The aspects concern scientific issues like: scale problem, inverse problems and chemical reactions in subsoil. Also a need of developing specialized software, setting hardware infrastructure and training staff are addressed as the necessary conditions for keeping pace with world's hydrogeology.