Opencast Al Mining Methods

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Coal mine area monitoring method by machine learning …

Spectroscopy has been extensive used in coal identification and analyses. Zeng et al. [17], [18] used computer and spectral data to monitor and control the coal moisture of power station boilers, and obtained good control effects. Hu et al. [19] based on spectroscopy and a least squares support vector machine designed a coal quality analysis method. . They firstly …

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Quantifying the impacts of opencast mining on vegetation …

For instance, opencast mining activity causes the loss of forest cover, forest fragmentation reduces plant growth, accelerates land degradation, increases air pollution, and is responsible for several human health-related issues (Goparaju et al., 2017; Ranjan et al., 2021). The opencast mining actions are the main reasons for forest cover ...

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Opencast Mining

The open-pit or open cast mining method is the obvious choice for a property with wide area of mineralization exposed or exists close to the surface and continues to greater depth. The open …

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COAL LOSS AND DILUTION REDUCTION IN OPENCAST …

The opencast mining methods used in the exploitation of underground coal pillars involve the blasting of pillars with overburden and collapse the bords before exposure by draglines, trucks, and shovel fleets. This research study also aims to answer the main research question relating to the current causes of both dilution and coal losses, and ...

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Geotechnological structure of a combined opencast and …

A combined opencast-to-underground mining method is widely used for final extraction of border zone coal reserves and extracting areas with limited and non-technological reserves. The idea of the method is that coal is extracted by opencast method and continued by underground mining using highwall mining complex, mobile mining mechanical ...

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Chapter 3 Mining and Mineral Processing

Mining and Mineral Processing 3.1 Opencast Mines Opencast mining is extraction of commercial minerals from the Earth's surface using open-pit workings. About 60 % of metallic ores, 85 % of non-metallic ores, 100 % of non-metallics, and 35 % of coal are produced by this method. The distribution of mineral resources of the world is shown in Fig ...

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Optimization of land use structure based on an …

operation in October 2000. The East opencast coal mine was completed in January 2009. The Pingshuo opencast mine area, with an area of 517.48 km 2, is the largest and most mod - ernized coal mining area in China. The Pingshuo opencast mine area exhibits the typical loess plateau landscape with a fragile ecosystem (Xie et al., 2022).

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Mining Methods

An economic viability of a modern day mine is highly dependent upon careful planning and management. Declining trends in average ore grades, increasing mining costs and environmental considerations will ensure that this situation will remain in the foreseeable future. This book describes mining methods for the surface and underground mineral deposits.

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Highwall Mining

highwall mining systems (Vandergrift et al., 2004). ... When the coal seam appears at outcrop in hilly area, conventional method of mining i.e. opencast or underground may not be best economic ...

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A guide to assessing the health and wellbeing impacts of …

Opencast coal mining: process and method Opencast mining, a method of mining introduced in 1942 to maintain coal supplies du ring the Second World War, is a quarrying method that is viable where a coal seam is relatively near the land surface or where a pit can expose a number of seams within an acceptable depth (normally up to 100m in the UK).

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Influences of revegetation type and age on soil C-, N- and P

Mine dumps are concentrated areas where waste rocks and stripped soil are stacked, accounting for approximately 45.5 % of the land damaged by open-pit coal mining, and these areas are crucial for land reclamation and ecological restoration in mining areas (Cai et al., 2022).Currently, revegetation is widely acknowledged as an important and efficient measure …

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A review on existing opencast coal mining methods within …

A review on existing opencast coal mining methods within Australia. Journal of Mining Science, 46(3), 280 ... Choi, Sing-Ki Xavier et al. In: Journal of Mining Science, Vol. 46, No. 3, 2010, p. 280 - 297. Research output: Contribution to journal › Article › Research › peer-review. TY - JOUR. T1 - A review on existing opencast coal mining ...

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12.10: Open-Pit Mining

EXTRACTION; REHABILITATION; TYPICAL OPEN CUT GRADES; REFLECTION QUESTIONS; Contributors and Attributions; Open-pit mining, or open-cast 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 …

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Opencast Mining

Notes opencast mining opencast mining opencast mining destroys landscapes, forest, and wildlife habitat at the mining site when trees, plants, and topsoil are ... (Juwarkar et al., 2015, 2016). Opencast mining operations involve the removal of huge quantities of overburden, dumping, and backfilling of the excavated area. ... The open pit or ...

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Open-Pit Mining | Method and Process

Open-pit mining, also known as opencast mining, is a surface mining technique that extracts minerals from an open pit in the ground. ... Additionally, set-up and production costs tend to be lower than other methods, which also means that lower grades of ore are economic to mine. Related products and services. Geophysical Logging Services.

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Slope Stability Analysis of Opencast Mine Dump using the …

This study aims to analyse the slope stability of opencast lignite mine overburden dump benches by determining the slope factor of safety via 2-D limit equilibrium software. ... Many previous studies have determined the slope factor of safety using software based on the limit equilibrium method. A Rotaru et al. (2022) performed slope stability ...

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