Monitoring Extractive Activity-Induced Surface …
— Mining developments in alpine coal mining areas result in slow or rapid ground subsidence, which can lead to melting and collapse of permafrost. This paper integrated unmanned aerial vehicle (UAV) …
Optimization of land use structure based on an improved
— Based on the land use data in 1986, 1996, 2000, 2004, 2009, 2015 and 2020 in the Pingshuo opencast coal mine area, the land use information entropy and dynamic degree were calculated, and the land use transfer matrix and complex network were constructed. The evolution characteristics of land usage were analyzed from several …
Hybrid opencast/underground process to mine Kuzbass coal …
— In the long term, the unmanned Highwall geotechnology is considered as an intermediate stage of the hybrid mining method, Highwall mining technology is a fully autonomous, mobile, high-performance and economic coal mining system that allows fully mechanized underground mining at an opencast.
Optimization of the load-and-haul operation at an opencast colliery
— A time study is conducted on shovels in an opencast coal mine with experimental blasts of rocks to assess the impact of different factors on the performance of the shovel.
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 …
Open-Pit Mining | Method and Process
The list of commodities is extensive, although the relative proportions mined underground and on the surface vary from mineral to mineral. Massive tonnages of hard coal and lignite are also produced from surface mines, although the terminology used – open cast or open cut, rather than open-pit – indicates that the technology and engineering concepts used …
A REVIEW ON EXISTING OPENCAST COAL MINING …
The selection of a mining method is based on careful consideration of a number of important factors, including geographic and geologic information, deposit size and …
Methods of extraction in Opencast mine | PPT
— This document discusses different methods for extracting coal from an opencast mine containing three coal seams separated by interburden layers. It shows a diagram of the coal seams with overburden and interburden layers not to scale. The document requests comments on observing the overall pit slope angle used for …
Open Pit Mining
— Open pit mining method is one of the surface mining methods that has a traditional cone-shaped excavation and is usually employed to exploit a near-surface, nonselective and low-grade zones deposits. It often results in high productivity and requires large capital investments, low operating costs, and good safety conditions. The main …
Opencast Mining (Quarrying): Methods, Advantages
In this article we will discuss about the opencast mining (quarrying):- 1. What is Opencast Mining? 2. Methods of Quarrying 3. Quarriable Limit 4. Formation of Benches 5. Manual …
Dump Slope Stability Rating and Risk Assessment in Opencast Coal …
— 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.
How to optimize dust pollution control in …
— 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 …
A review on existing opencast coal mining methods within …
— Abstract. Currently almost 65 % of the coal in Australia is being produced by opencast mining methods. Mining equipments such as draglines, dredgers or bucket …
[PDF] Underground and Opencast Coal Mining Methods in …
— 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 …
Construction of landscape ecological network based on …
— Pingshuo opencast coal mine area is located in Shuozhou City in the north of Shanxi Province, located in the hilly area of the Loess Plateau, China (Fig. 2). It is a large-scale concentrated coal development area in China. ... By improving the mining technology and methods of coal resources, the impact of mining process on ecological vegetation
Hazard identification and risk assessment of opencast …
— Methods Formation of multi-disciplinary team. A team approach is always desirable to start the process with hazard identification. Mine manger shall be the team leader of the core committee and other members such as safety officer, engineer in-charge, mine production in-charge, shift officers, workmen's inspectors, supervisors, fitter and …
A REVIEW ON EXISTING OPENCAST COAL MINING …
As mentioned, surface mining or opencast coal mining is the predominant method used in Australia, and so is focused on within this paper. Opencast coal mining on a large scale first commenced in Australia in the 1960's. Today, draglines and truck and shovel operations, or a mixture of the two, are the predominant
Life cycle assessment of opencast lignite mining
— The life cycle phase of fossil fuel extraction is mainly considered in the life cycle assessment (LCA) when evaluating the energy production processes. It is then only one of many unit processes, which contribute to the blurring of mining-relevant results. There are few items in the literature focusing exclusively on the lignite mining phase and …
INNOVATIONS OF DEEP OPENCAST MINING WITH …
— Mine project planning is beset with various anomalies of geological reserves, quality of coal or mineral, availability of infrastructure, types of technology, methods of works, acquirable surface ...
A review on existing opencast coal mining …
— This review focuses on the importance of microbiology in the spoil-to-soil transformation after open cut coal mining and discusses the ways that microbial inoculants could be used to...
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 …
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).
Evolution of Opencast Mines in the Raniganj Coalfield …
— Surface mining is the dominant driver of land use land cover (LULC) change in the Raniganj coalfield region in West Bengal, India. Owing to its multifaceted consequences on soil, water, and landholders, assessment of spatio-temporal changes in mining areas has become important. The oldest coal mine of India, Raniganj coalfield …
Technology Roadmap for Coal Sector
2.1.1 Semi Mechanized Methods: Currently, most of CIL mines using Bord & Pillar remove coal from the face by blasting & deploy SDL or LHD for loading and transportation of coal in the active mining areas. Coal transportation to surface is either by a series of belt conveyors or rope haulage drawn coal tubs. 2.1.2. Continuous mining
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 …
Blast‐Casting Mechanism and Parameter
Overburden stripping by the blast-casting method in an opencast coal mine. (a) Inner-dump. (b) Blast-casting muckpile. A greater effective casting percentage (ECP) and a better muckpile formation are the main technical targets of adopting the blast-casting method for overburden stripping in opencast mines. They are affected by several factors ...
List of Equipment Used in Opencast Coal Mining | Mining
Opencast mining is the oldest method of excavating minerals but the mining operations have been mechanised by the use of heavy earth moving machinery during the last 50 years resulting in excavations on a scale which was unthinkable half a century ago. Equipment # 1. Bulldozer: A bulldozer is often referred to simply as a dozer.
Assessing the ecological impacts of opencast coal mining in …
— In fact, opencast mining is the most directly disturbed way which deteriorate land ecosystem in nature (Guan et al., 2017, Bruno Rocha Martins et al., 2020). Therefore, it is crucial to keep an eye on and conduct study on how opencast mining is affecting the quality of the ecology. The Muli coalfield has a 3.54-billion-ton coal reserve.
Opencast Mining Method | PDF | Coal Mining | Surface Mining
Opencast Mining Method - Free download as PDF File (.pdf), Text File (.txt) or read online for free. helpfull information
Mass Production Technologies for Underground Coal Mining …
— The opencast mining method of extracting coal has several unwanted environmental implications. This method destroys the landscapes, flora, fauna, soil balance, etc. permanently. The mining operations cause high air, sound, and water pollution in surrounding areas. Blast vibration, air pollution, and water problems cause social …
Dynamic simulation of an opencast coal mine: a …
— The modelling method considered the dynamic, stochastic and systemic characteristics of the operation. The research conducted on the history of simulation in the mining industry confirmed that the …
COAL MINING IN INDIA: TECHNOLOGY, CHALLENGES …
On the other hand, mechanization with adoption of latest mining methods is the only option left to the mine planners to make a coal mining project economically viable. This paper, in this context, discusses the related pros and cons, more especially the high speed drivage using road ... Most of the opencast coal mines are mechanised using ...
[PDF] Risks and challenges affecting opencast pillar mining …
— Due to the depletion of coal reserves, the pillars and remnant coal are now removed using opencast mining rather than underground methods. However, the secondary extraction of pillars and remnant coal from the old workings using opencast methods entails some serious challenges that have a negative impact on the safety and …
(PDF) COAL MINING METHODS
— The methods of mining of coal varies from deposit to deposit. This report highlights the coal mining methods, their significances, issues of concern and the stages of using coal after...
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, the extractable r eserve will last .