Opencast coal mining can result in a largescale land destruction. Due to the diversity of land use and the complexity of land use structure, there are severe conflicts in the productionliving ...
Coal production in opencast mining generates substantial waste materials, which are typically delivered to an onsite waste dump. ... we used the Shengli Coalfield in the eastern steppe region of Inner Mongolia to demonstrate a mining and reclamation monitoring process. We combined the Google Earth Engine platform with time series Landsat ...
Opencast mining operations involve the removal of huge quantities of overburden, dumping, and backfilling of the excavated area. These overburden deposits of waste material containing lowgrade ores are represented as mine spoil dumps.
Coal is one of the most essential resources of a country. It is widely used for power generation and as a raw material in the industries. India ranks third in coal production. However, the country has to import coal in order to meet the rising demand for coal. In India, coal mining is conducted using two methods: underground and opencast methods.
The coal industry serves a vital role in the nation's economy by producing fuel for more than half of its electricity. Despite the industry's importance, industry financial data for 2005—the strongest year for the coal industry in recent years—shows that it is a relatively small industry with revenues totaling 20 billion to 25 billion and net income between 1 billion and 2 ...
The technology for opencast lignite mining is noted for its high production efficiency, high level of recovery and lower risk as regards the safety of workers when compared with underground mining systems. ... The authors concluded that mined land reclamation is an important process in opencast coal mine production; however, it was rarely ...
Coal mining process in Pingshuo opencast mine involves clearing the aboveground vegetation, removing the topsoil and overburden to access coal seams. The overburden, consisting of soils and rocks with large diameter, is transported and piled to form largescale dumps in Pingshuo mine with the application of topsoil that is characterized by ...
Largescale opencast coal mining results in the severe destruction of original ecosystems, as well as changes in land use. ... In the mining process, topsoil is removed, topography and geological structures are changed permanently, and surface and subsurface hydrology regimes are disrupted (Zhou et al., 2017). The arid and semiarid continental ...
opencast mining Stripping surface layers from the Earth's crust to obtain coal, ores or other valuable minerals. Dragline excavators strip away surface layers and mechanical shovels distribute minerals and spoil. The minerals are carried away for grading and processing. In some countries, owners of opencast mines are required to restore the environmental quality of the land after mining has ...
The last operating opencast mine in the UK, which produces around twothirds of the country's coal, has closed amid concerns that it could be left abandoned. The FfosyFran pit in Merthyr Tydfil has produced nearly million tonnes of coal since opening in 2008, and is responsible for 86% of the UK's total coal output.
Opencast mining or quarrying of minerals is easier than mining by underground methods. During quarrying the alluvium and rocks below which the minerals lie, are removed and dumped, in the initial stages, in a place which is not required in future for quarrying, residential or other purposes. The mineral exposed is completely extracted. Opencast ...
In order to improve dust pollution control in opencast coal mines, this study combines prospect theory with evolutionary game theory, analyzing the evolutionary game process of coordinated governance activities of coal mining enterprises, local regulators, and social camps in the management of dust pollution against the backdrop of national ...
Surface coal mining in the steep terrain of the central Appalachian coalfields includes: auger mining. scattered areas of eastern Tennessee. removing parts or all of mountaintops to expose buried seams of coal, and. "interburden" (rock between coal seams). Overburden and interburden are disposed of in adjacent valleys because the broken rock ...
Of the Minerals Council's 77 members, 38, or effectively 50%, were juniors, he noted. In 2018, total revenues generated by the country's juniors, in all mining sectors, had been R54billion ...
opencast coal mines is an essential application in previous studies. Caro explored the relationship between surface deformation and subsurface water levels to provide rough
This process is experimental and the keywords may be updated as the learning algorithm improves. Chapter PDF. Download to read the full chapter text References 'Opencast Coal Mining in Great Britain', W. G. Martin, Opencast Mining, Quarrying and Alluvial Mining, Institution of Mining and Metallurgy, 1965, p. 617. Google Scholar ...
the environment of mining and the surrounding mining also pumping and drain of groundwater,lower the groundwater level,less the amount of water, aquifer of Quaternary will be drained in the openpit mining process, seriously influence the use of water resources. Air Pollution The main air pollution generated by openpit
The opencast coal mining complex extends. over two mines within the Witbank Coalfield, ... These sumps required a mud loading process prior to mining the coal below the sequence. The mud loading ...
Opencast coal mining causes serious damage to the natural landscape, resulting in the depletion of the carbon sequestration capacity in the mining activity. There are few studies on the variation of carbon sequestration capabilities caused by land use changes in opencast mining areas.
Especially in the mining of opencast coal mines (FernandezManso et al., 2012; ... Based on the fluctuation analysis of the dynamic succession characteristics of NDVI time series images in the process of land reclamation in mining areas, the maximum synthesis method was used to synthesize the NDVI data in the vegetation growing season (May ...
Open pit mining is defined as the method of extracting any near surface ore deposit using one or more horizontal benches to extract the ore while dumping overburden and tailings (waste) at a specified disposal site outside the final pit boundary. Open pit mining is used for the extraction of both metallic and nonmetallic ores.
The triangulated irregular network (TIN) clipping algorithm is one of the vital algorithms for the digital mining design of opencast coal mines based on the geological digital elevation model (DEM) described by TIN. This paper gives a precise TIN clipping algorithm applied in the digital mining design of the opencast coal mine. To improve the algorithm's efficiency, a spatial grid index is ...
The research object of this paper is road dust in opencast coal mines. International Organization for Standardization (ISO) regulations, dust is suspended solids with particle size less than 75μm, including and PM10. During the mining process of openpit coal mines, various techniques can generate dust.
Define opencast mining. opencast mining synonyms, opencast mining pronunciation, opencast mining translation, English dictionary definition of opencast mining. n Brit mining by excavating from the surface. ... opencast mining the mining of ore or coal from an open mine. strip mining. mining, excavation the act of extracting ores or coal etc ...
Highwall mining is an adaptation of auger mining. Instead of an auger hole, an entry into the coal seam is made by a continuous miner, remotely operated from a cabin at the surface. The cut coal is transported by conveyors behind the miner to the outside. Using a television camera, the operator can see and control the miner's progress.
Opencast mining is regarded as one of the most dramatic disturbances in terrestrial ecosystems. Opencast coal mining leads to the destruction of local ecological environment and the loss of natural conditions (Milder et al. 2013 ).
This study therefore investigated the pollution of surface soils surrounding 135 large opencast coal mining pits in China. A total of 1772 surface soil samples were collected, and the concentrations of eight major HMs were determined. The HM concentrations in this study were relatively lower than the published HM concentrations of coal mine ...
In particular, we analyzed the dynamic change process of land use in typical openpit coal mines from 2001 to 2020, identified the reasons for the spatial changes in land use, and put forward policy recommendations for the optimization of land mining and reclamation in mining areas. ... Mukherjee S., Pahari Underground and Opencast Coal ...
: OpenPit Mining. Openpit mining, or opencast mining is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow. This form of mining differs from extractive methods that require tunneling into the earth, such as long wall mining. Openpit mines are used when deposits of ...
on opencast coal mine using LCA were focused on single process, including mine haulage options (AwuahOffei et al. 2009) and the selection of mining technologies (Chinh et al. 2007;MangenaandBrent2006;);however, there was only a few research that were concerned on the whole opencast coal mining stages related to environmental
Solution mining includes both borehole mining, such as the methods used to extrac t sodium chloride or sulfur, and leaching, either through drillholes or in dumps or heap s on the surface. 2 ...
The reclamation of surface (opencast) coal mines is not always successful; there remains a legacy of degraded land that burdens local communities. This article evaluates a communityoriented, lowcost means of geoecological regeneration, the "Cradle for Nature" strategy, which uses mosaic tree planting to foster positive natural ecological processes. Results show that, while the ...
The Piparwar opencast mine in Jharkhand was once the largest coalproducing mine in the state and had damaged the local ecology. Now, after about 30 years of mining operations being started, the staterun Central Coalfields Limited (CCL), is carrying out reclamation and restoration in a part of the original mining area, to make it suitable for public use.
The mining company tried to open another opencast the same size as FfosyFran, which was successfully shut down as well." But, despite their best efforts, mining at FfosyFran continued. There ...
© DZCrusher - كل الحقوق محفوظة
