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Wyszukujesz frazę "mining drainage" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Środowiskowe uwarunkowania skutków odkrywkowej eksploatacji węgla brunatnego na Pojezierzu Gnieźnieńskim
Environmental conditions of the effects of opencast brown coal exploitation in the Gniezno Lakeland
Autorzy:
Przybyłek, Jan
Powiązania:
https://bibliotekanauki.pl/articles/2076074.pdf
Data publikacji:
2020
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
drenaż górniczy
wody gruntowe
jeziora
rekultywacja wody
Pojezierze Gnieźnieńskie
mining drainage
groundwater
lakes
water reclamation
Gniezno Lakeland
Opis:
The paper focuses on the problem of water draining from brown coal pits, which has occurred since the 1950s in the Gniezno Lakeland in the western part of central Poland. Threats to hydrogeological systems and related lake systems under conditions of mining-induced drainage near the lakes located in the Powidz Landscape Park (PLP) are indicated. The lowering of water level in the PLP lakes exceeds 5 m, as compared to the pre-mining-induced drainage state. Such a rapid change may cause ecological disaster for these deep-water, healthy lake ecosystems with abundant submerged macrophyte (Charophyte) habitats (Natura 2000 protected area). Considering the regional context, the causes of hydrodynamic pressure leading to degradation of Lake Wilczyńskie and neighbouring, hydrologically connected lakes, are presented. The proposed mitigation actions for improving the ecological state of these lakes are presented in the contexts of (1) water balance assessment, (2) hydrotechnical issues related to the redistribution of water from the Slesiňski Canal (the Warta River - Lake Goplo) through water pipeline transmission, and (3) the accelerating groundwater reclamation of the Jóźwin IIB open mine pit area.
Źródło:
Przegląd Geologiczny; 2020, 68, 8; 645--654
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Drainage wells as an integral part of a deep dewatering system in Szczerców field in the Bełchatów Lignite Mine
Autorzy:
Gasiński, J.
Macuda, J.
Szewczyk, S.
Powiązania:
https://bibliotekanauki.pl/articles/298930.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
dewatering of rock mass
wells
large-diameter dewatering wells
drainage wells
groundwater
open-pit mining
extraction of lignite
Opis:
The open-pit extraction of lignite in the Bełchatów Lignite Mine can be conducted after prior deep dewatering of the rock mass, realized with large-diameter dewatering wells distributed in the form of outer and inner barriers. This type of dewatering system allows for safe extraction of lignite, however residual waters in the overburden may locally create hazard. These are rain waters infiltrating into the rock mass, and which, due to the complicated geological structure of the deposit and disturbed system of layers, were not intaken by wells belonging to the primary dewatering system. They are removed through the existing and newly drilled exploration wells, which are converted into drainage wells. Such wells are used for removing waters suspended in permeable overburden and gravitationally moved to the lower absorbing layers, from where they are directed to the primary dewatering system wells and then to the surface water courses. The applied enhancement of the dewatering system used in the lignite deposit significantly improves the safety of mining works conducted in this place. Technical and technological aspects of drilling dewatering wells in Bełchatów Lignite Mine are discussed in this paper and followed by the evaluation of efficiency of dewatering of the overburden.
Źródło:
AGH Drilling, Oil, Gas; 2017, 34, 2; 455-463
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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