Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: test pumping

Sortuj według:

Ogranicz wyniki do:

Many years’ extraction of groundwater in the context of established usable groundwater reserves

Macuda J., Styrkowiec E.

AGH Drilling, Oil, Gas

2017

Vol. 34, no. 2

419--427

The operation of water supply networks basically relies on the ability of supply water, which in the case of groundwater intakes, is defined by usable reserves offered by the wells involved. Their establishing is the last stage of an investment, i.e. building of groundwater intakes, and their value determines the type of infrastructure and technological hardware in the wells. Owing to the fact that the usable groundwater reserves are conditioned by a number of factors (economic, technological, environmental) their correct determining depends on the correct definition of the number and quality of measurements and hydrogeological observations. In practice, these measurements tend to be shortened to minimum (test pumping) or discarded (diagnostics of well construction) for financial reasons. As a result the user obtains either over- or underestimated information about the intake parameters. Exploitation of a well with overestimated capacity brings about serious technological and economic consequences, starting from the lowered productivity (drop of water table, lower yield), change of chemical composition of water, sanding up of the well as well as well failures and damage. The use of a well with underrated output does not shorten the life of the well, though is disadvantageous for the economic reasons. The productivity of wells can be verified after a few years of controlled extraction, on the basis of which the cost of water extraction, stability of chemical composition or impact on other intakes in given work conditions. Accordingly, this is a basis for updating usable groundwater reserves of the wells. Moreover, after many years of observation of groundwater intakes, one can formulate recommendations warrantying long life of wells, rational management of pump aggregates and well renovation plans.

Wyniki analizy próbnych pompowań w węglanowych skałach dewońskich w Górach Świętokrzyskich

Rzonca B.

Inżynieria Środowiska / Akademia Górniczo-Hutnicza im. S. Staszica w Krakowie

2000

T. 5, z. 1

175-183

W pracy podjęto próbę wyznaczenia parametrów hydrogeologicznych węglanowych skał dewońskich w Górach Świętokrzyskich. Jest to niezbędny etap na drodze do rozpoznania warunków krążenia wód podziemnych. Rozpoznanie pola hydrodynamicznego pozwoli zaś na oszacowanie zasobów wód poziomu dewońskiego, co ma olbrzymie znaczenie dla gospodarki wodnej regionu w znacznym stopniu uzależnionej od ujęć eksploatujących wody podziemne tego piętra. Parametry hydrauliczne ośrodka skalnego (współczynnik filtracji) oszacowano poprzez zebranie i powtórne zinterpretowanie dużego, regionalnego zbioru wyników próbnych pompowań ujęć studziennych. Dla 202 studni policzono współczynnik filtracji wzorem Girińskiego-Babuszkina. Uzyskane wyniki charakteryzują się bardzo dużym stopniem zróżnicowania. Wykazano brak pionowej strefowości parametrów hydrogeologicznych w dewońskich skałach węglanowych regionu świętokrzyskiego.

In this paper an attempt at demarcating the hydrogeological parameters of the Devonian carbonate formations in the Świętokrzyskie Mountains (Holy Cross Mts.) in the south of Poland was undertaken. This is a vital step on the road to identifying the circulation conditions of groundwaters. The identification of the hydrodynamic field in turn allows an estimation of the water resources of the Devonian aquifer, which is of great importance to the water management of the region. This region has become increasingly dependent on wells exploiting the groundwaters of the Devonian aquifer. The hydraulic parameters of the rock environment (coefficient of permeability) were estimated by the collection of and reinterpretation of large regional test pumping results for the wells. For 202 wells the coefficient of permeability was obtained using the Girinskiego-Babuszkina equation. The obtained results are characterised by a high degree of variation. It's been shown that there is no vertical zonality of the hydrogeological parameters in the Devonian carbonate formations of the Świętokrzyskie Mts. region.