Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 7

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  mining activity
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

Subsidence determinations in Zonguldak/Turkey using InSAR between 2005 and 2013

100%
Kutoglu H. S., Berber M., Kemaldere H.
Electronic Journal of Polish Agricultural Universities. Series: Geodesy and Cartography
|
2019
|
tom 22
|
nr 2
2

Effects of mining activities on river water quality

84%
Richter P., Pecharova E.
Polish Journal of Environmental Studies
|
2013
|
tom 22
|
nr 4
The purpose of this work was to assess development of the quality of surface water in the Svatava River in the Czech Republic from 1997 to 2008. Parameters typical for pollution as a result of mining activities (SO 2-4 , Fe, Mn) were monitored, as well as select heavy metals (Pb and Cd). A falling tendency in the values of annual averages of all the monitored indicators in all profiles is apparent. The least polluted water is in the profiles Hranice and Kraslice on the upper course of the Svatava River. Conversely, the most polluted water is in the Sokolov profile, in front of the site where the Svatava River flows into the Ohře. This applies to all the monitored indicators of the Sokolov profile that the greatest pollution values were recorded during 1997 and 2002, and for sulphurs also in 1999 and 2003. The analyzed ion concentrations are still significantly higher than in other profiles, with the exception of lead and cadmium, where pollution is the greatest in the Oloví profile. However, in 2008 the measured values for all indicators did not exceed valid limits.
3

Inland coal mine settling pond as a habitat for the brackish-water plant Ruppia maritima

84%
Halabowski D., Sowa A., Krodkiewska M.
Polish Journal of Ecology
|
2018
|
tom 66
|
nr 3
The research conducted in settling ponds located in the coal basin in Upper Silesia (southern Poland), detected in one of them presence of the widgeon grass Ruppia maritima. Currently, it is the only inland site of this species in Poland. The widgeon grass creates underwater meadows in the shore zone of the settling pond and it grows in dense communities together with the common reed Phragmites australis in the coastal zone. Apart from these two plants, no other species were found. The morphological features of the vegetative and generative organs of the studied population of R. maritima is similar to those that have been reported from Europe. The bottom of the pond is atypical for R. maritima – it is covered by mine waste. The water of the settling pond has a high salinity and the water chemistry corresponds to the more natural environments that are inhabited by widgeon grass. This substitute habitat, which imitates the natural environment of R. maritima contributes to the good development of these species. However the studied settling pond offers unstable conditions due to the ongoing mining activity and requires permanent monitoring.
4

The long-term changes of forest communities as an effect of former iron-ore mining activities and current forest management: importance for local biodiversity

67%
Podgorska M.
Polish Journal of Ecology
|
2016
|
tom 64
|
nr 1
The human induced changes affect the transformation of different plant communities. In some cases this process can contribute to increase in local biodiversity, but it depends on type and manner of human activity involved. The main aim of this study is to answer the question how two anthropogenic factors (former and current) can modify the species composition in forest phytocoenoses. The study area is situated in the southern Poland (Małopolska Upland). The studies were carried out on two former (19th century) mining fields where planting Common Beech Fagus sylvatica (field A) and Scots Pine Pinus sylvestris (field B) have been done since the first half of the 20th century. On gob piles (sites transformed by former iron-ore mining), single-species beech (field A) or pine (field B) tree stands are undergoing secondary succession, and transform into multi-species, fertile deciduous forests. This secondary communities corresponding to the types of new, fertile soils (formed by clayey-loamy material of gob piles), generated as a result of mining activities. Whereas, on non-transformed areas forest communities with floristic structures and composition linked to poor and acidophilous phytocoenoses developed. These communities are also compatible with their respective, primary habitats (acid, poor, and sandy soils). Nonetheless, the secondary succession of forest communities on gob piles can be disturbed. In the herb layer of fertile habitats of post-mining sites where Pinus sylverstis was planted (field B) acidophilous species among mesophilous forest species were noted. This process of acidification of humus layer is induced by the fall of needles of pines and it has not been observed in communities with planted Fagus sylvatica (field A). It was found that previous mining activities now affect the secondary succession in the forest communities of northern part of the Małopolska Upland because they have created new habitats where process of forming mesophilous phytocoenoses was observed. Accordingly, former human activity leads to the increase in local biodiversity. On the other side current forest management can reduce this effect as a result of planting tree species which acidify these fertile habitats and suppressed the occurrence of mesophilous forest species, what, by contrast, decrease the species richness.
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Wpływ wychylenia budynku na wytężenie konstrukcji w warunkach eksploatacji górniczej

67%
Slowik L.
Acta Scientiarum Polonorum. Architectura
|
2017
|
tom 16
|
nr 3
Jednym ze skutków podziemnej eksploatacji górniczej jest nachylenie powierzchni terenu powodujące przejściowe, a także – w określonych warunkach górniczo-geologicznych – trwałe wychylenie budynków z pionu. W artykule omówiony został aspekt statyczno-wytrzymałościowy wychylenia budynku wielokondygnacyjnego, spowodowanego podziemną eksploatacją górniczą. Wychylenie budynku z pionu powoduje pojawienie się dodatkowego poziomego obciążenia konstrukcji od ciężaru budynku. Wpływ poziomych sił na konstrukcję budynku jest szczególnie niekorzystny w przypadku obiektów o wysoko położonym środku ciężkości. W pracy przytoczono przykład symulacji numerycznej, której celem było określenie wytężenia konstrukcji wychylonego budynku. Ostatecznie podane zostały rezultaty przeprowadzonej analizy oraz wynikające z nich wnioski.
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Economic analysis for technical and executive projects with geosynthetic materials for the protection of linear structures in the mining areas

67%
Kadela M., Gwozdz-Lason M.
Acta Scientiarum Polonorum. Architectura
|
2021
|
tom 20
|
nr 1
7
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Geodetic monitoring (TLS) of a steel transport trestle bridge located in an active mining exploitation site

67%
Skoczylas A., Kamoda J., Zaczek-Peplinska J.
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation
|
2016
|
tom 48
|
nr 3
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.