Detecting the effects of opencast mining on ecosystem …
Study area. The study area is located in Dongsheng District, Ordos City, Inner Mongolia Autonomous Region, China, in Junger and Yijinholo Banners, where the Dongsheng and Junger coal fields are distributed, and the mining method is mainly opencast mining (Fig. 1).From 2002 to 2012, rising coal prices in China drove the large-scale development of coal …
Factors Affecting Slope Stability of an Opencast …
Relevant causal factors were evaluated by developing a novel ensemble feature selection method that involved an average of different individual feature selection methods like correlation ...
Optimization of land use structure based on an improved
Opencast mining is one of the most common coal mining methods (Yuan et al., 2018; Zhang et al., 2015). It permanently alters the topography and geological structure by removing overburden through excavation, and causes damage to surface and groundwater (Feng et al., 2019; Yu et al., 2020).
Hybrid opencast/underground process to mine Kuzbass …
Hybrid opencast/underground process to mine Kuzbass coal deposits. VA Fedorin 1, VYa Shakhmatov 1, BA Anferov 1 and LV Kuznetsova 1. Published under licence by IOP Publishing Ltd IOP Conference Series: Earth and Environmental Science, Volume 262, Challenges for Development in Mining Science and Mining Industry 1–5 October 2018, …
Opencast Mining
Slope Failure Mechanism and Monitoring Techniques. S.K. Chaulya, G.M. Prasad, in Sensing and Monitoring Technologies for Mines and Hazardous Areas, 2016 Abstract. Opencast mining operations involve huge quantities of overburden removal, dumping and backfilling in …
OPENCAST COAL MINING AT LARGE DEPTH IN INDIA-CHALLENGES AHEAD
In India, around 92% of the coal is produced by opencast mining method (Table 1). If do mestic coa l pro duction cont inues at 5% increasing rate, ... Mikkelson (2003) and Hanna et al (1982) have ...
Hazard identification and risk assessment of opencast
Mining safety and sustainability are two important concepts that are essential for the responsible development and management of the mining industry (Jiskani et al. 2020).Mining, the process of extracting minerals from the earth, can have significant impacts on environment, health, and safety of workers, and the surrounding communities (Yadav et al. …
Assessing the ecological impacts of opencast coal mining in …
The Globalmoran's I value are 0.558, 0.546, 0.409, 0.574 and 0.680 in 2000, 2005, 2010, 2015, 2020, which indicated that the spatial distribution of ecological environment quality was positively correlated and the quality impacted by opencast mining indeed. Our method constructed for evaluation based on RSEI and time-series is confirmed to ...
Dump Slope Stability Rating and Risk Assessment in Opencast …
Opencast coal mining methods play a key role in enhancing coal production level which in turn fulfils growth necessities of the country. In case of opencast coal mining, the first step is to remove the overburden economically to expose the underlying coal for excavation and later on needs to be handled safely. ... (McQuillan et al., 2018 ...
(PDF) A review on existing opencast coal mining …
Journal of Mining Science, Vol. 46, No. 3, 2010 A REVIEW ON EXISTING OPENCAST COAL MINING METHODS WITHIN AUSTRALIA B. Scott, P. G. Ranjith, S. K. Choi*, and Manoj Khandelwal** UDC 622.271.3 Currently …
Open-cast Mining
Open-cast Mining. Open-cast mining is one of the most popular surface mining methods mostly employed for bedded deposits. The kind of minerals or rocks mined this way …
Geochemical characterization of mine overburden strata for …
Opencast coal mining generates a large amount of mine overburden spoils and creates huge overburden dumps in and around the mining area. It is a big issue as most of the overburden materials (OBMs) are unsuitable for vegetation due to lack of true soil characteristics, and are generally contaminated with toxic heavy metals (TMs).
Factors affecting choice of opencast mining methods
Factors affecting choice of opencast mining methods Geography Legal status of land and mining rights Historical, political, and socialogical factors Geology Mining conditions Ore treatment requirements Economic analysis Geography: Topography, a function of location, affects cost of development and operation of a surface mine.
Life cycle assessment of opencast lignite mining
The life cycle phase of fossil fuel extraction is mainly considered in the LCA assessment when evaluating the energy production processes. It is then only one of many unit processes, which contribute to the blurring of mining-relevant results (Ditsele and Awuah-Offei 2012; Singh et al. 2016).LCA covering the extraction phase as one element of the entire life …
Open-Pit Mining: A Comprehensive Guide
As a result of its scale and efficiency, opencast mining has become a widely employed method in the industry. The Process of Removing Overburden and Extraction. Open-pit mining involves a series of steps for the extraction of minerals. The process begins with removing vegetation and topsoil to expose the ore.
Hydrogeochemical Mechanisms and Hydraulic Connection of …
The identification of water sources and hydraulic connectivity in different aquifers within coal mines is crucial for effective groundwater management and has important implications for mine safety, water resource conservation, and regional ecological protection. The Dongming opencast coal mine in Hailar City, Inner Mongolia, China, is threatened by groundwater …
Quantifying the impacts of opencast mining on
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 ...
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 …
Determination of the emission rate from various opencast mining
A total of seven opencast coal mines and three iron ore mines have been selected for the generation of data for the development of empirical formulae for the determination of emission rate of each mining activity and another opencast coal mine has been selected for validation study. 2.1.2. Study sites
Open-Pit Mining | Method and Process | Epiroc
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.
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.
The Impact of Opencast Lignite Mining on Rural …
The future of opencast mining and energy production based on conventional resources is one of the most important issues being discussed in international forums. ... can be extracted in Germany in the Lausitz region. Furthermore, Kermer et al. point out specific methods for the enrichment, separation and mobilisation of valuable materials from ...
(PDF) Criticality in computation of volume excavated by opencast mining …
Radar (InSAR) technique was used to determine surface profile of opencast mine (Paradella et al., 2015; Mura et al., 2014). Several methods of volume computation were exercised by various r ...
A review on existing opencast coal mining methods within Australia
Currently almost 65 % of the coal in Australia is being produced by opencast mining methods. Mining equipments such as draglines, dredgers or bucket wheel excavators, trucks and shovels, and dozers are the main equipments employed for overburden removal and coal extraction. The choice of equipment for a particular mine depends on geological, …
Lesson 7.3: Mechanical Surface Mining Methods
Open Cast Mining. Open cast mining is usually associated with coal or other tabular deposits that are more or less flat-lying. A significant difference between open pit and open cast …
Life cycle assessment of opencast coal mine production: a
Opencast coal mine production in China has increased by 12% of total production, and most of them are located in arid areas (Li et al. 2012). Opencast mining is regarded as …
(PDF) The opencast bauxite mining in N.E. Ghiona: Eco …
Underground mining method (tunneling) in the study area (Mertzanis et al., 2005a). Figures 7. (a) Combination of "open cast" and "underground" mining methods, in the study area. ... (a) Dense road network constructed in order to get access to the Kokinovrahos opencast mine (Mertzanis et al., 2005b). (b) Obstruction of water courses due ...
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 ...
(PDF) Mining Methods: Part I-Surface mining
Surface mining; Classification of surface mining methods together with the desired parameters/ conditions suitable for their applications; Open pit mining; Classification of quarrying methods ...
Reclamation of Degraded Landscapes due to …
The most common surface mining methods such as strip mining, open pit mining, opencast mining and quarrying start from the earth's surface …