Microstructure and adhesion force of dust on soil pavement in open-pit mine
The microstructure and adhesion force between dust particles determine the dust starting and migration to a certain extent. By use of scanning electron microscopy, the BET method, and the abruption technique, the microstructure and adhesion force of dust on the soil pavement of an open-pit mine were examined. The results indicate that the dust …
Mexico's president calls for ban on open-pit mining
President of Mexico Andres Manuel Lopez Obrador has granted no new open-pit mining concessions since coming to power in 2018. (Photo by Hector Vivas/Getty Images) Mexican President Andrés Manuel López Obrador proposed to modify Article 27 to prohibit open-pit mining, as part of a range of constitutional reforms presented before …
Summary and prospect of open-pit coal mining technology …
In the past 40 years of reform and opening up, China's open-pit coal mining technology has developed rapidly. Based on the latest information on China's open-pit coal mining technology and the National Coal Energy Production Capacity Announcement of the National Energy Administration in 2019, the development status of open-pit coal mines …
Research on boundary optimization of adjacent …
In order to improve the economic efficiency of mining the overburdened coal seam in the overlapping part of the end gang of the adjacent open pit mine, Ma Li et al. …
Open Pit Mining | IntechOpen
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 …
Coal mining | Definition, History, Types, & Facts | Britannica
Coal is the most abundant fossil fuel on Earth. Its predominant use has always been for producing heat energy. It was the basic energy source that fueled the Industrial Revolution of the 18th and 19th centuries, and the industrial growth of that era in turn supported the large-scale exploitation of coal deposits. Since the mid-20th century, …
Zonal extraction technology and numerical simulation analysis in open
According to the past investigations about zonal mining technology, we try to recover the residual coal under end-walls of open pit mines. Thus, the key issue of this research is to ensure the extraction system and mining parameters. 2. Zonal extraction system for residual coal around end-walls. There was a lot of coal which could not be …
Research and practice of intelligent coal mine technology …
The intelligent construction of open-pit coal mines is still in its initial stage. The automation of equipment, design, and management information does not meet the requirements of intelligent mining. Therefore, the intelligent transformation, upgrading, and development of open-pit coal mines is an urgent and difficult task.
Research Progress of Soil and Vegetation Restoration …
years [3]. According to the statistics, seventy-five percent of the added value of global coal production comes from open-pit coal mines. In China, open-pit coal production accounts for 15% of the total coal production [4]. At present, China has gained popularity as the world's largest producer and consumer of coal resources [5,6].
Minas Moatize Coal Mine, Tete
BHR started mining of thermal coal from the first open pit, Trial Pit 1 (TP1), in the second quarter of 2011. The first wash plant (a temporary coal handling and preparation plant) was commissioned in the first half of that year. The plant is expected to process the coal at a rate of 100tph. It is equivalent to 600,000tpa of run-of-mine (ROM) …
Study on MICP dust suppression technology in open pit coal mine
To control dust in open pit coal mines more environmentally friendly and efficiently, and to promote the use and development of non-in situ high-yield urease microorganisms for dust suppression in coal mines, Bacillus pasteurii was selected for dust suppression experiments in this article. Additionally, the growth of microorganisms in the …
Multidimensional spatial monitoring of open pit mine dust …
The Anjialing open pit mine (located in Xiyi Village, Baitang Township, Pinglu District) is the second largest open pit mine in the Pingshuo mining area, with an annual production of 20 Mt/year ...
Advances in coal mining technology and sustainable mining …
The technology of coal mining has gone through continual evolutions and several revolutionary changes which transformed the methods, equipment, and productivity over the decades. ... For instance, in an open-pit mine, the data can be collected from autonomous drills, loaders, shovels, trucks, and others related to the mining operation. …
Stability analysis of rib pillars in highwall mining under
At present, the coal seam exploited in large open-pit mines in China is mostly near-horizontal coal seam, and the internal dumping technology in the mining area is widely adopted (Chen and Wu 2016; Wang et al. 2019; Wu et al. 2020; Zhao et al. 2020; Lelek and Kulczycka 2021).In the traditional open-pit mining design, the transportation …
Innovation in the Mining Industry: Technological Trends and …
Innovation plays a critical role in the mining industry as a tool to improve the efficiency of its processes, to reduce costs, but also to meet the increasing social and environmental concerns among communities and authorities. Technological progress has also been crucial to allow the exploitation of new deposits in more complex scenarios: …
Application of open-pit and underground mining technology for residual
In order to enhance coal recovery ratio of open pit coal mines, a new extraction method called zonal mining system for residual coal around the end-walls is presented. The mining system can improve economic benefits by exploiting haulage and ventilation roadways from the exposed position of coal seams by utilizing the existing …
Application of open-pit and underground mining technology …
To improve coal recovery rate of open pit coal mines, according to the conditions of coal seams at flat dipping open pit coal mines in China, a new mining system for recovering remaining coal ...
Open Pit Mining
Open-pit mining is the process of extracting rock or minerals from the earth through their removal from an open pit or borrow. Figure 8.8. Open-pit mine [16]. Surface mining is usually used to develop coal seams and deposits of many other minerals, but their feasibilities vary with the nature of the body ore.
Mapping South Australia's big mines and new projects
The mine produced 139,000 tonnes of copper between July 2017 and June 2018, and 179,000 ounces of gold, with open pit operations leading in both minerals. As a result, the future of the mine is somewhat uncertain, with the closure of the productive open pit operations posing a threat to production.
Application of open-pit and underground mining technology …
Keywords: integrated open-pit and underground mining; end-slope; resource recovery; economic benefit; surface coal mine 1 Introduction Integrated surface and underground mining tech- nology is a method which utilizes existing mining technology and production systems, recycling the outer boundary coal remnants (these coal …
A precise TIN clipping algorithm for the digital mining …
Coal Science and Technology. 2019; 47(10):36–42. View Article Google Scholar 10. Zhao JC. Construction and application of digital mining design model in open-pit coal mine. Xuzhou: China University of Mining and Technology Press; 2021. 11. Maillot PG. Three-dimensional homogeneous clipping of triangle strips.
Intelligent early-warning platform for open-pit …
This paper reviews the current state of digital early warning platforms for open-pit mines using a Web of Science database search for pertinent literature. The …
Open-Pit Coal Mines: Implications for Green …
Pollution in Open-Pit Coal Mines: Implications for Green Mining. Energies 2021, 14, 2680. https:// doi/10.3390/en14092680. Academic Editor: A.J.S. (Sam) Spearing. Received: …
Digital Transformation of Open-Pit Coal Mining in …
Digital Transformation of Open-Pit Coal Mining in Russia. Chapter. First Online: 10 August 2021. pp 235–248. Cite this chapter. Download book PDF. Download …
Intelligent systems and technology in open pit coal mining …
DOI: 10.17580/GZH.2018.01.05 Corpus ID: 115439713; Intelligent systems and technology in open pit coal mining with high overburden benches @article{Rylnikova2018IntelligentSA, title={Intelligent systems and technology in open pit coal mining with high overburden benches}, author={M. V. Ryl'nikova and Viktor …
Transforming India's mining landscape with autonomous technology
PwC's analysis reveals that deployment of the autonomous mining equipment in open-pit mines has grown significantly in the last two decades in both developed and emerging markets. Additionally, the adoption of such technology cuts across the mining of commodities such as iron ore, gold, copper and coal.
Feasibility Evaluation of Highwall Mining in Open-Pit Coal Mine …
Highwall mining is a method that involves using a continuous highwall miner system (CHM) to extract coal from the remaining coal seams, which has proven to be an effective and safe method for extracting coal after open-pit mining. However, application cases globally have shown that the feasibility of highwall mining in open-pit coal mines …
Research on production capacity planning method of open-pit coal mine …
The Chenbaerhuqi coal field in Hulunbuir City, Inner Mongolia Autonomous Region of China, is where the Baorixile open-pit coal mine is situated (as shown in Fig. 2) 7,28.The mine's external ...
Preliminary analysis of the catastrophic February 22nd 2023 …
Open-pit coal mining often involves dividing the mining areas into multiple horizontal layers, which results in a stepped spatial configuration that facilitates sequential extraction from top to bottom and, consequently, the generation of expansive mining faces and steeper excavation slopes (Li and Zhang 2021).This combination, together with the …
Intelligent systems and technology in open pit coal mining …
The parameters of the open-pit mining of the Almalyk deposit of porphyry copper ores of the Kalmakir open-cast are analyzed. Three-dimensional model of the quarry is constructed by means of modern ...