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2013year4month9day In addition to exploring for mineral deposits, electromagnetic methods can also be used to characterize the waste from the mining process (Poisson et al. 2009) and
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2021year9month28day Electromagnetic Methods in Geophysics: Applications in GeoRadar, FDEM, TDEM, and AEM: Front Matter. 1 . Introduction 3. 2 . Electromgnetic (EM)
Read More2022year1month3day With more electronic systems being introduced underground, the mining industry is facing electromagnetic compatibility (EMC) issues caused by electromagnetic
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2019year11month13day Then, three representative electromagnetic sounding methods, including a surface frequency-domain electromagnetic method, time-domain electromagnetic
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2020year1month23day Application of the CSAMT Method to Pb–Zn Mineral Deposits: A Case Study in Jianshui, China. The electromagnetic (EM) method is commonly used in mineral
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Abstract. Electrical methods of geophysics are fundamental in mineral exploration because they can directly detect and delineate conductive sulfide minerals. Electromagnetic
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2017year8month25day Abstract. In the period from 2008 to 2012, the topic of electromagnetic (EM) induction methods applied to mineral exploration has been the subject of more than
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Electromagnetic (EM) methods, both airborne and ground, are one of the most widely used geophysical techniques in mineral exploration, in which natural or controlled sources are
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In the period from 2008 to 2012, the topic of electromagnetic (EM) induction methods applied to mineral exploration has been the subject of more than 50 papers in journals
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In the period from 2008 to 2012, the topic of electromagnetic (EM) induction methods applied to mineral exploration has been the subject of more than 50 papers in journals and more than 300 extended abstracts presented at conferences (about 100 of which contain developments worthy of mentioning). Most of the work at the universities has been on
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2019year2month27day Section 1 Fundamental Electromagnetism To comprehend the bases and the interpretational techniques of electrical prospecting methods, requires first a knowledge of the tools of electromagnetic theory. The ability to solve a boundary-value problem in electromagnetic theory then becomes the objective. All electromagnetic phenomena are
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The introduction of induced polarization in the 1950s represented a major advance in mining geophysics by making possible the direct detection of disseminated sulfides. Both induced polarization and electromagnetic methods have benefited from research directed at achieving greater resolution and greater depth of exploration.
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Electromagnetic (EM) techniques are extremely important as a direct detection geophysical tool utilized in the base metal industry. They were developed in countries such as Canada, whose thin conductive weathering overburden did not hamper the penetration of EM signals and enabled exploration to depths on the order of 300 m. As a result, EM techniques
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2013year4month1day The magnetotelluric (MT) method is a passive exploration technique that uses natural electromagnetic (EM) fields to probe the electrical conductivity structure of the earth at depths ranging from ...
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The physical property function M–iN for the electromagnetic method has a maximum value of one half for a sphere while the change with frequency of the electrical resistivity contrast. Thus, except for a factor of two, the magnetic, resistivity, electromagnetic, and induced-polarization methods should give the same maximum anomaly.
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2020year3month1day The AMT method cannot obtain reliable data due to the strong electromagnetic interference in the mining area. The data qualities of profile BD-1 before and after adding power supply to Stations 78 and 83 are compared in Fig. 8. The electromagnetic field values fluctuate severely before adding power supply, and they
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2023year10month10day Electromagnetic Metallurgy. It is a technology based on physical chemistry of metallurgical process, metallurgical reaction engineering, and metallurgical process theory, combined with theories of electromagnetism and modern magnetohydrodynamics, using electromagnetic fields to optimize the dynamical
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2012year4month1day Analysis of applications and results. ... Electromagnetic radiation induced by mining rock failure. International Journal of Coal Geology, 64 (1–2) (2005), pp. 57-65. View PDF View article View in Scopus Google Scholar. Gong, 2006. Gong, B.J., 2006. Telescopic Patch Joint Using for Deep-hole Ground Stress Monitoring Device.
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2019year10month2day Abstract. 1. Fundamentals. 1-I. Introduction. We are concerned in this section with establishing the basic material upon which the subsequent sections of the chapter depend. Thus we must establish the Maxwell field equations and the wave potentials in the unitary system to be utilized (mks), and follow this with solutions of the wave
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2021year11month25day Electromagnetic energy emitted from electronic devices has been known to interfere with other electronic systems, hindering their ability to function properly. Mines have many electronic devices critical to the health and safety of mine workers that could be negatively affected by electromagnetic interference (EMI). To ensure that devices are
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2017year8month25day Electromagnetic Induction Methods in Mining Geophysics from 2008 to 2012 Richard Smith Received: 21 September 2012/Accepted: 19 March 2013/Published online: 9 April 2013 ... opments and the applications of electromagnetic methods in mineral exploration, it is also necessary to cover the unrefereed literature, which is primarily
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2024year5month14day ABSTRACT Urban expansion has resulted in many proposed projects located over coal mining zones, which has highlighted the importance of detecting the spatial scope and water abundance of goafs before the commencement of construction work. Although electromagnetic (EM) methods have proven effective for goaf detection, their
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2019year8month3day With the emergence and development of unmanned aerial vehicles (UAVs), different sensors have become more miniaturized and intelligent. UAVs equipped with various sensors are now an important approach for acquiring spatial data. Many advantages, such as low cost, short revisiting cycle, flexibility and high precision, have made UAVs
Read More2019year11month13day During the past 20 years, due to the rapid development of China's economy, the amount of coal mining activities has rapidly increased, which has led to a large increase in the number of mined-out areas. Therefore, the role of geophysical exploration in coal fields has changed from the detection of coal resources to engineering geological
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2020year3month1day Application of pseudo-random frequency domain electromagnetic method in mining areas with strong interferences. Author links open overlay panel Yan-fang HU a b c, Di-quan LI a b c, Bo YUAN a b c ... In practical applications, a combination of pseudo-random signals of multiple frequency groups can also be selected as the excitation signal
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2012year4month1day Based on the authors’ research work in the past decade, detailed discussions are made with respect to the engineering applications of electromagnetic radiation spectrum, law of transmission and signal collection of gas-containing coal and rock. ... The research team led by Prof. Xueqiu in China University of Mining and Technology
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2022year2month18day Sensing T echnology Applications in the Mining Industry—A. Systematic Review. Joana Duarte 1, Fernanda Rodrigues 2and Jacqueline Castelo Branco 1, *. 1 Associated Laboratory for Energy ...
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2022 Feb 1 27 January 2022311215236 Electromagnetic Applications in Methane Hydrate Reservoirs Chapter 6. ... In 1985, the mining company Luossavaara-Kiirunavaara Aktiebolag collected airborne very-low-frequency (VLF) data in northern Sweden. The operators stored only the vertical component and the total magnetic field, which at that time were ...
Read More2023year7month7day Electromagnetic (EM) wave front modulation has important significance in both scientific researches and industrial applications. It is highly demanded in classical information processing 1,2 ...
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