Opencast coal mining in India: Analyzing and addressing the air environmental impacts Mrinal K. Ghose First published: 04 April 2007 https://// Citations: 8 PDF Tools Share References Citing Literature Volume 16, Issue 3 Spring 2007 Pages 7187 References Information
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.
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.
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 ...
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 ...
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 ...
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 ...
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
Abstract and Figures. Open pit mining method is one of the surface mining methods that has a traditional coneshaped excavation and is usually employed to exploit a nearsurface, nonselective and ...
Opencast mining dominates coal production in India. A survey was conducted to evaluate its local atmospheric impact. ... The results show that both wave patterns undergo "rolling" + "lifting" during the dust lifting process. The difference is that the dust layer is first pressed and then lifted in the case of spherical waves, while the ...
Opencast coal mining activities result in severe degradation of land resources and ecological environment (Wang et al. 2016).In the process of opencast mining, topsoil overlying the coal are stripped and deposited on damlike dump with largescale heavy machinery (Krummelbein et al. 2010).The compaction effects are intensified by the large tires of crawlers and dump trucks going back and forth.
Ideally, opencast mining requires longterm planning within a strong policy framework. Naturt therefore strongly welcomes the recent strengthening of the policy framework for regulating the opencast coal industry in Scotland heralded by NPPG 16. Natut's approach to opencast coal developments recognises the need for a continuing supply ...
Open Cast Mining. Open cast mining is usually associated with coal or other tabular deposits that are more or less flatlying. A significant difference between open pit and open cast mining methods is that in open cast mining, overburden that is removed to gain access to the ore is immediately placed in the previously mined cut.
Planning and managing equipment systems of surface mining are critical for achieving higher production and productivity. Poor performance of equipment systems can endanger the economic viability of mining operations [][].OB removal is a major process in the surface mining of coal, accounting for over 60% of the mining cost [4, 5].Dragline is predominantly used for overburden removal to ...
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 ...
PROCESS DESCRIPTION This guideline covers the open cast mining of ore bearing rock including coal. It excludes quarrying and open cast extraction of construction materials, stone and rock. (The processing of ore after extraction is covered in the Mineral Processing guideline as this is common to both open cast and underground mining operations ...
Openpit mining, also known as opencast mining, is a surface mining technique that extracts minerals from an open pit in the ground. Openpit mining is the most common method used throughout the world for mineral mining and does not require extractive methods or tunnels. This surface mining technique is used when mineral or ore deposits are ...
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 ...
Methods of extraction Coal extraction methods vary depending on whether the mine is an underground mine or a surface (also called open cast) mine. Additionally, coal seam thickness and geology are factors in the selection of a mining method. The most economical method of coal extraction for surface mines is the electric shovel or drag line.
OPENCAST MINING definition: the activity of taking minerals, especially coal, from the surface of the ground rather than from.. Learn more.
Surface mining consumes land; land reclamation is the process of returning minedthrough land to an environmentally and socially acceptable state. Unfortunately, as in the recycling of other ...
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.
© DZCrusher - كل الحقوق محفوظة
