Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: spoil tip

Sortuj według:

Ogranicz wyniki do:

Heavy Metals in Soil and Plants During Revegetation of Coal Mine Spoil Tips and Surrounded Territories

Kucher Larisa, Krasnoshtan Igor, Nedilska Uliana, Muliarchuk Oksana, Manzii Olena, Menderetsky Vadim, Boroday Vira, Beregniak Evgeniy, Voitsekhivskyi Volodymyr, Myronycheva Olena

Journal of Ecological Engineering

2023

Vol. 24, nr 7

234--245

Coal mining in Donbas is a global problem as it causes the destabilization of ecological landscapes. Spoil tips, covering almost 52% of the territory, alter the topography of the land, affect the ecosystem, and decrease soil fertility. The soils become degraded and are unsuitable for agricultural use. The occupation of the Donetsk region by the Russian Federation has suspended the observation and research of man-made influence on this territory, which is a major concern for the scientific community. To reduce the negative impact of spoil tips, it is necessary to slow down the process of pyrite oxidation and the formation of toxic substances, as well as the migration of heavy metals due to erosion. Biological reclamation with grass and woody plants can help in achieving this goal. Another urgent issue is the constant supervision and assessment of the suitability of the bedrock of coal mines for agricultural use. The study investigated the total and mobile content of heavy metals in the rock samples from the “South Donbaska-1” mine, ordinary chernozem (background soil), and vegetation growing on the spoil tip. The results showed that the content of Co, Cr, Cu, and Fe in the rock of the spoil tip is higher than in the background soils. The content of heavy metals gradually decreases as the distance from the spoil tip increases. The content of Pb in ordinary chernozem and rock is practically the same, indicating its active migration. An analysis of the biomass of plant samples growing on the spoil tip showed that the content of Co, Cu, and Zn was within the limits of the threshold limiting values. However, the content of other studied elements exceeded the permissible norms. The research results provide information on the ecological state of the spoil tip and can be used for recreational as well as reclamation works in these areas.

Zastosowanie metody inwersji danych z pomiarów elektrooporowych do oceny stanu termicznego hałdy pogórniczej w Chorzowie

Kotyrba A., Siwek A.

Przegląd Geologiczny

2017

Vol. 65, nr 8

496--504

Air conditions in post-mining areas are threatened by thermal activity of old spoil tips of coal mines. Reclamation operations cause only time-limited suppression of the oxidation process of carbon particles in the spoil heap. There are different reasons for that process. One of them is the incorrectly recognized geometry of the combustion spots in the spoil tip mass and the ways in which they are powered by oxygen from the atmosphere. The 1D inversion of vertical resistivity sounding data (VES) allows visualizing the down-going thermal effects and concluding about transport of atmospheric air (oxygen) and combustion gases in the whole mass. The resistivity distribution within waste can effectively support interpretation of geochemical and geothermic observations made on the spoil tip. The article describes the results of resistivity measurements made on an old spoil tip with waste from coal production in a heavy urbanized area of Chorzów City. Currently, the area of the former spoil heap is used for recreation and sports purposes (a park).