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1.
Chemosphere ; 346: 140573, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-38303389

RESUMEN

Availability of raw materials in the chemical industry is related to the selection of the chemical processes in which they are used as well as to the efficiency, cost, and eventual evolution to more competitive dynamics of transformation technologies. In general terms however, any chemically transforming technology starts with the extraction, purification, design, manufacture, use, and disposal of materials. It is important to create a new paradigm towards green chemistry, sustainability, and circular economy in the chemical sciences that help to better employ, reuse, and recycle the materials used in every aspect of modern life. Electrochemistry is a growing field of knowledge that can help with these issues to reduce solid waste and the impact of chemical processes on the environment. Several electrochemical studies in the last decades have benefited the recovery of important chemical compounds and elements through electrodeposition, electrowinning, electrocoagulation, electrodialysis, and other processes. The use of living organisms and microorganisms using an electrochemical perspective (known as bioelectrochemistry), is also calling attention to "mining", through plants and microorganisms, essential chemical elements. New process design or the optimization of the current technologies is a major necessity to enhance production and minimize the use of raw materials along with less generation of wastes and secondary by-products. In this context, this contribution aims to show an up-to-date scenario of both environmental electrochemical and bioelectrochemical processes for the extraction, use, recovery and recycling of materials in a circular economy model.


Asunto(s)
Reciclaje , Administración de Residuos , Electroquímica , Minería , Residuos Sólidos , Tecnología
2.
Environ Sci Pollut Res Int ; 30(40): 91676-91709, 2023 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-37526818

RESUMEN

Mine tailings contain finer particles, crushed rocks, dugout-soil, water, and organic and inorganic metals or metalloids, including heavy metals and radionuclides, which are dumped as waste or non-economic by-products generated during mining and mineral processing. These abundant and untreated materials seriously threaten the environment, human health, and biodiversity because of the presence of heavy metals, radionuclides, and associated primary and secondary toxic components, including the risk of tailings dam failures. Biocementation technology, which involves the use of mining microbes to secrete cement-like materials that bind soil particles together, is a promising approach to restore mine tailing sites and reduce their mobility and toxicity. However, there is a lack of literature on the combined interactions among mining microbes, tailings residues, biocementation, and low-carbon cement (LCC) prospects. This comprehensive review article explores the prospects of mining microbes for mine tailings restoration using biocementation technology, the key influencing factors and their impact, mechanisms and metabolic pathways, and the effectiveness of biocementation technology in restoring mine tailings sites. In addition, it reviews the utilization of mine tailings materials as an alternative source of cement or construction materials for LCC technology. Furthermore, this review highlights the important issues, challenges, limitations, and applications of biocementation technology for mine tailings rehabilitation. Finally, it provides insights for future research and implementation of biocementation for mine tailings restoration and utilization of tailing materials in the industrial sector to reduce carbon emissions/footprints and achieve net-zero goals.


Asunto(s)
Metales Pesados , Contaminantes del Suelo , Humanos , Metales Pesados/análisis , Suelo/química , Minería , Minerales , Tecnología , Contaminantes del Suelo/análisis
3.
Environ Sci Pollut Res Int ; 30(41): 93388-93406, 2023 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-37548788

RESUMEN

The goaf is an important factor that induces major accidents. Based on the quantitative analysis of the existing research results, summarize and sort out the research and prevention technology of the goaf disaster with the experience of experts. Temporally, the research on goaf disasters was divided into two stages: the embryonic stage and the rapid development stage. Spatially, a collaborative network with the United States, China, Germany, France, Turkey, and the United Kingdom as the core, including India, Japan, Belgium, Italy, South Korea, and Canada, was analyzed. By constructing a co-occurrence and clustering network of keywords and co-cited literature to explore the focus and hotspots of goaf disaster research, the hotspots of goaf disaster research are summarized into four main aspects, such as goaf detection technology, goaf disaster analysis, goaf risk assessment and goaf treatment technology, which grasp the content of goaf research from a macro perspective. The burst detection analysis of keywords and co-cited literature was conducted to obtain the research frontiers of goaf disaster research in different periods. At the current stage, the microstructural characteristics of surrounding rocks in the context of deep mining and complex goaf group effect and the mining technology of the integration of excavation, anchoring and supporting are the current frontier research directions. This combined qualitative and quantitative method is more helpful to grasp the development context of goaf disaster research and provides a new reference perspective for sorting out the process of goaf disaster research.


Asunto(s)
Desastres , Estados Unidos , Minería , Tecnología , China , Japón
4.
J Environ Manage ; 344: 118646, 2023 Oct 15.
Artículo en Inglés | MEDLINE | ID: mdl-37481916

RESUMEN

Mining activities induce some social problems, such as polluted environments, the destruction of aquatic live, which have long been debated by scholars and practitioners. To mitigate this problem, underpinning dynamic capability view, our study explores whether the digital transformation (DT) affects corporate social responsibility (CSR) by using 1308 Chinese mining A-shared listed firms from 2010 to 2021, and how the potential relationship is moderated by environmental uncertainty (EU) and supply chain concentration (SCC). Applying fixed effects regressions, we find that DT fosters CSR in the mining industry, but CSR performance is weakened when DT processed at higher EU and SCC respectively. Our findings enrich the literature on CSR of mining industry and highlight that DT is an important driver that shapes CSR practice.


Asunto(s)
Tecnología Digital , Minería , Responsabilidad Social , Desarrollo Sostenible , China
5.
Artículo en Inglés | MEDLINE | ID: mdl-36901404

RESUMEN

This paper investigates the impact of land use/cover type changes in the Haideigou open-pit coal mine on the evolution of the landscape patterns and ecological and environmental quality in the mine area, based on medium- and high-resolution remote sensing images in 2006, 2011, 2016, and 2021 using ArcGIS 10.5, Fragstats 4.2, and the Google Earth Engine platform. The results show that: (1) From 2006 to 2021, the area of cropland and waste dumps in the Heidaigou mining area changed significantly, the land use shifted in a single direction, and the overall land use change was unbalanced. (2) Through the analysis of landscape indicators, it was shown that the diversity of the landscape patches in the study area increased, connectivity decreased, and the patches became more fragmented. (3) Based on the changes in the mean value of the RSEI over the past 15 years, the ecological environment quality of the mining area deteriorated first and then improved. The quality of the ecological environment in the mining area was significantly affected by human activities. This study provides an important basis for achieving the sustainability and stability of ecological environmental development in mining areas.


Asunto(s)
Ambiente , Minería , Humanos , China , Tecnología de Sensores Remotos , Ecosistema , Monitoreo del Ambiente/métodos , Conservación de los Recursos Naturales/métodos
6.
Environ Sci Pollut Res Int ; 30(22): 62170-62200, 2023 May.
Artículo en Inglés | MEDLINE | ID: mdl-36940022

RESUMEN

Dust pollution control is the basic guarantee of mine safety production, which has been widely concerned by scholars. Based on a total of 1786 publications collected by the Web of Science Core Collection (WOSCC) from 2001 to 2021, this paper analyzes the spatial-temporal distribution characteristics, hot topics, and frontier trends of the international mine dust field during the past 20 years by using Citespace and VOSviewer knowledge graph technology. The research shows that the study of mine dust can be divided into three stages: initial period (2001 ~ 2008), stable transition period (2009 ~ 2016), and boom period (2017 ~ 2021). The journals and disciplines which belong to mine dust research mainly focus on environmental science and engineering technology. A stable core group of authors and institutions have been preliminarily formed in the dust research field. The main themes of the study contained the whole process of mine dust generation, transport, prevention, and control, as well as the consequences of disaster. At present, the hot research fields mainly focus on mine dust particle pollution, multi-stage dust prevention, and emission reduction technologies, and mine occupational protection, monitoring, and early warning. In the future, the research should focus on the mechanism of dust production and transportation, the theory of efficient prevention and control, the technology and equipment of precise prevention and control of dust, and the high-precision monitoring and early warning of dust concentration. Future research should be concerned with dust control in underground mines and deep concave open-pit mines with complicated and treacherous environments, and strengthen research institutions, interdisciplinary cooperation, and interaction so as to promote the integration and application of mine dust and automation, information, and intelligent technology.


Asunto(s)
Desastres , Polvo , Polvo/análisis , Minería , Tecnología , Contaminación Ambiental
7.
Artículo en Inglés | MEDLINE | ID: mdl-36834465

RESUMEN

Understanding the synergistic effect between topography and vegetation in the underground coal mine is of great significance for the ecological restoration and sustainable development of mining areas. This paper took advantage of unmanned aerial vehicle (UAV) remote sensing to obtain high-precision topographic factors (i.e., digital elevation model (DEM), slope, and aspect) in the Shangwan Coal Mine. Then, a normalized difference vegetation index (NDVI) was calculated utilizing Landsat images from 2017 to 2021, and the NDVI with the same spatial resolution as the slope and aspect was acquired by down-sampling. Finally, the synergistic effect of topography and vegetation in the underground mining area was revealed by dividing the topography obtained using high-precision data into 21 types. The results show that: (1) the vegetation cover was dominated by "slightly low-VC", "medium-VC", and "slightly high-VC" in the study area, and there was a positive correlation between the slope and NDVI when the slope was more than 5°. (2) When the slope was slight, the aspect had less influence on the vegetation growth. When the slope was larger, the influence of the aspect increased in the study area. (3) "Rapidly steep-semi-sunny slope" was the most suitable combination for the vegetation growth in the study area. This paper revealed the relationship between the topography and vegetation. In addition, it provided a scientific and effective foundation for decision-making of ecological restoration in the underground coal mine.


Asunto(s)
Tecnología de Sensores Remotos , Dispositivos Aéreos No Tripulados , Minería , Carbón Mineral
8.
Environ Sci Pollut Res Int ; 30(7): 17076-17093, 2023 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-36630032

RESUMEN

As the shallow mineral resources are nearly depleted, the mining of deep resources has become an urgent problem to be studied. The increase in mine depth can lead to the increase of mine heat hazard, which is a critical concern for mining safety/occupational health and safety. However, there are limited review articles available regarding the prevention of mine heat hazard. To fill in this gap, a bibliometric analysis and knowledge mapping of the field of mine heat hazard prevention are presented in this paper. A total of 314 papers from the Web of Science (WOS) core collection database that published between January 1998 and July 2022 were analyzed using VOSviewer and CiteSpace. China, South Africa, Poland, USA, and Australia are the top five countries in this field. The important journals are Applied Thermal Engineering, Applied Energy, Energies, and International Journal of Mining Science and Technology. In addition, the research focal points and two research fronts were identified and discussed. The knowledge base of mine heat hazard research focuses on mine cooling technology, energy efficiency optimization of cooling systems, thermodynamic theory, and occupational health. There are two research fronts. One is to use the numerical simulation method to study various problems such as simulate the performance of refrigeration systems and thermal comfort in mines. The second is to study the occupational health impact of climate change on miners. Therefore, this paper provides readers and academics with an overview of the intellectual structure and knowledge body that have been developed on the subject of mine heat hazard.


Asunto(s)
Bibliometría , Calor , Minería , Polonia , Tecnología
9.
Terminología | DeCS - Descriptores en Ciencias de la Salud | ID: 008845

RESUMEN

The science, art, or technology dealing with processes involved in the separation of metals from their ores, the technique of making or compounding the alloys, the techniques of working or heat-treating metals, and the mining of metals. It includes industrial metallurgy as well as metallurgical techniques employed in the preparation and working of metals used in dentistry, with special reference to orthodontic and prosthodontic appliances. (From Jablonski, Dictionary of Dentistry, 1992, p494)


Ciencia, arte, o tecnología que se encarga de procesos en los que participa la separación de metales del mineral, la técnica de hacer o componer aleaciones, las técnicas de trabajar o tratar los metales con calor, y la obtención minera de los metales. Incluye la metalurgia industrial así como las técnicas metalúrgicas empleadas en la preparación y el trabajo de los metales utilizados en la odontología, con especial referencia a instrumentos ortodóncicos y protodóncicos.


A ciência, arte ou tecnologia que lida com processos envolvidos na separação de metais de seus minérios, a técnica de fabricação ou composição de ligas, as técnicas de trabalhar ou tratar os metais com o calor e a mineração de metais. Inclui metalurgia industrial, como também técnicas empregadas na preparação e trabalho de metais usados em odontologia, com referência especial para instrumentos ortodônticos e prostodônticos.

10.
Sci Total Environ ; 860: 160511, 2023 Feb 20.
Artículo en Inglés | MEDLINE | ID: mdl-36442635

RESUMEN

Hyperspectral remote sensing has the advantages to predict and map soil heavy metal concentration over conventional monitoring methods and multispectral remote sensing. In quantitative applications of hyperspectral remote sensing imagery, the contribution of hyperspectral bands is different, and abnormal prediction values resulted from incorrectly classified bare soil images are a major problem. In this study, a variable weighting method was proposed to weight the hyperspectral bands, and a probability threshold was used to improve the classification to mitigate the problem of abnormal prediction values. The variable weighting was conducted by using the absorption depths obtained by continuum removal. Soil samples were collected from a mining area in southwestern China. Hyperspectral remote sensing imagery was acquired by the Advanced Hyperspectral Imager (AHSI) abroad on Geofen-5 (GF-5) satellite. Genetic algorithm and partial least squares regression (PLSR) were adopted to calibrate prediction models. In prediction of soil copper (Cu) concentration, root mean square error (RMSE) and coefficient of determination (R2) were 21.59 mg kg-1 and 0.60 for the prediction using raw reflectance spectra, and the values were improved to 18.33 mg kg-1 and 0.71 by using the weighted reflectance spectra. The developed prediction model was applied to the AHSI imagery to predict Cu concentration in bare soil areas. In prediction of Cu concentration using the AHSI imagery, negative prediction values were eliminated by using the bare soil image extracted by the improved classification. Based on the prediction, soil Cu concentration map was generated by kriging spatial interpolation. The result indicates that the proposed variable weighting method is effective and the problem of abnormal prediction values could be mitigated by using improved bare soil images. Further analysis indicates that some indices with proper thresholds also could be used to get improved bare soil images.


Asunto(s)
Cobre , Suelo , Tecnología de Sensores Remotos/métodos , Imágenes Hiperespectrales , Minería
11.
Sci Total Environ ; 859(Pt 2): 160392, 2023 Feb 10.
Artículo en Inglés | MEDLINE | ID: mdl-36423851

RESUMEN

The increasing frequency of mining activities in the world has led to many environmental pollution problems, such as mine wastewater discharge, mine solid waste dumps, and mine dust dispersion. These problems have negative implications for the environment and the public health of people living nearby the mining areas. Despite this, there are few methods to determine the state of mine pollution on a regional scale. Therefore, we applied remote sensing technologies to assess the mine pollution situation, especially the mine solid waste pollution, of a mining area, taking Qibaoshan Town, Liuyang City, Hunan Province, China, as an example. In our research, we have calculated the vegetation cover change of the Qibaoshan Town over the years (2000-2020), charted the vegetation coverage grade maps, and analysed the tendency of vegetation cover changes, to infer the mine pollution situation, the progress of pollution treatment and the efforts made by the local government and the mines on mine pollution disposal and the land reclamation. Additionally, mining damage can bring about geological hazards such as surface subsidence leading to vegetation destruction, while mining solid waste pollution and discharge can occupy a large amount of land and thus lead to vegetation reduction. As a result, this method of calculating FVC changes in a mining area is particularly suitable for assessing the extent of mining damage, the status of solid waste pollution and discharge, and the progress of land reclamation. In the abstract, we claim that this short communication article serves as a guide to start a conversation, and encourages experts and scholars to engage in this area of research.


Asunto(s)
Monitoreo del Ambiente , Residuos Sólidos , Humanos , Minería , Contaminación Ambiental , Tecnología de Sensores Remotos , China
12.
Psicol. ciênc. prof ; 43: e243813, 2023.
Artículo en Portugués | LILACS, Index Psicología - Revistas | ID: biblio-1431124

RESUMEN

Este estudo propõe analisar as relações e os processos de subjetivação de mulheres quebradeiras de coco babaçu decorrentes das intervenções de políticas desenvolvimentistas em seus territórios de vida e reverberações no Movimento Interestadual de Quebradeiras de Coco Babaçu (MIQCB). Sob a perspectiva ético-estético-política da Cartografia, acompanhamos as narrativas das histórias de vida de 24 mulheres, suas atividades cotidianas e eventos do MIQCB, também analisamos os documentos das políticas. Entendemos que, ao passo que tais políticas de desenvolvimento rural contribuem para a melhoria das condições de vida, em termos materiais e simbólicos, elas também produzem ressonâncias relacionadas ao modo de subjetivação do tipo "empresário de si", que agenciam seus modos de viver, de produzir e de se relacionar consigo e com os outros na lógica capitalista neoliberal. A resistência às capturas neoliberais também estão presentes ao ampliarem as mobilizações coletivas do próprio movimento, articulando com outros na produção de um "comum".(AU)


This study proposes to analyze the relations and the processes of subjectivation of babassu coconut-breaker women arising from developmental policy interventions in their territories of life and reverberations in the Babassu Coconut-breaker Interstate Movement (MIQCB). From the ethical-aesthetic-political perspective of Cartography, we followed the narratives of the life stories of 24 women, their daily activities and promoted events by MIQCB, we also analyzed the policy documents. We understand that while these policies of rural development contribute to improve the living conditions, in material and symbolic terms, they also produce resonances related to the "self-entrepreneur" mode of subjectivation, which has been handling their ways of living, producing, and relating to themselves and others in the neoliberal capitalist logic. Resistance to neoliberal captures is also present as they expand the collective mobilizations of the movement itself, articulating with others, in the production of a "common."(AU)


Este estudio tiene como objetivo analizar los procesos de subjetivación de las mujeres que rompen coco babaçu que surgen de las intervenciones de las políticas de desarrollo en sus territorios de vida y las reverberaciones en el Movimiento Interestadual de las Mujeres que Rompen Coco Babaçu (MIQCB). Desde la perspectiva ético-estético-política de la Cartografía, seguimos las narraciones de las historias de vida de 24 mujeres, sus actividades diarias y eventos del MIQCB, y también analizamos los documentos de las políticas. Si bien estas políticas han contribuido a mejorar las condiciones de vida de las mujeres, en términos materiales y simbólicos, también han producido resonancias del modo de subjetivación "autoempresarial", que ha agenciado sus formas de vivir, producir y relacionarse consigo mismas y con los demás en la lógica capitalista neoliberal. La resistencia a las capturas neoliberales también está presente cuando amplían las movilizaciones colectivas del propio movimiento, articulándose con otros en la producción de un "común".(AU)


Asunto(s)
Humanos , Femenino , Crecimiento y Desarrollo , Economía , Gobierno , Política , Pobreza , Psicología , Psicología Social , Política Pública , Jubilación , Población Rural , Deseabilidad Social , Justicia Social , Problemas Sociales , Ciencias Sociales , Suelo , Derechos de la Mujer , Madera , Políticas, Planificación y Administración en Salud , Planificación Socioeconómica , Políticas de Control Social , Legislación Ambiental , Brasil , Agua , Ejercicio Físico , Etnicidad , Desarrollo Económico , Áreas de Pobreza , Usos del Suelo , Medio Rural , Bosques , Organizaciones , Salud Ambiental , Conflicto de Intereses , Carga de Trabajo , Política de Planificación Familiar , Emprendimiento , Agroquímicos , Entrevista , Negociación Colectiva , Comercio , Productos Agrícolas , Gestión Ambiental , Explotación de Recursos Naturales , Recursos Naturales , Recursos Renovables , Reservas Naturales , Flora , Conservación de los Recursos Naturales , Diversidad Cultural , Naturaleza , Feminismo , Industria Procesadora y de Extracción , Administración de Recursos Naturales , Economía Rural , Capitalismo , Estado , Poder Público , Biodiversidad , Agricultura , Eficiencia , Ambiente , Medio Ambiente y Salud Pública , Gestión de Ciencia, Tecnología e Innovación en Salud , Proyectos , Mercado de Trabajo , Vigilancia Sanitaria de Productos , Control y Fiscalización de Alimentos y Bebidas , Alimentos de Coco , Maquinaria , Agricultura Sostenible , Recursos no Renovables , Agroindustria , Comunicación Ambiental , Feminidad , Política Ambiental , Pequeña Empresa , Violencia Étnica , Factores Sociológicos , Alimentos , Equilibrio entre Vida Personal y Laboral , Activismo Político , Participación de los Interesados , Derechos Socioeconómicos , Territorio Ocupado , Desarrollo Sostenible , Programas Sociales , Pueblos Indígenas , Derecho al Trabajo , Empoderamiento , Inclusión Social , Equidad de Género , Rol de Género , Vulnerabilidad Social , Responsabilidad Ambiental , Responsabilidad Socioambiental , Diversidad, Equidad e Inclusión , Condiciones de Trabajo , Comercio de Vida Silvestre , Necesidades y Demandas de Servicios de Salud , Vivienda , Actividades Humanas , Derechos Humanos , Sindicatos , Acontecimientos que Cambian la Vida , Antropología , Minería , Grupos Profesionales
13.
Artículo en Inglés | MEDLINE | ID: mdl-36497994

RESUMEN

The long-term stability of coal mine roadway engineering is critical to the safe mining of coal resources and the protection of the surface environment. In this paper, the creep test of coal samples in coal roadway was carried out by multi-stage constant load method, and the test results showed that when the stress level was low, the creep curve had a attenuated stage and a steady-state stage, and the steady-state creep rate tended to increase with the increase in the stress level; When the stress level was higher than the yield stress, the creep rate curve appeared to have an acceleration stage after the steady-state stage. The instability failure mode of the coal sample was mainly shear failure with local tension failure. For this, a New Fractional-order Nonlinear Viscoelastic-plastic Rheological Model (NFNVRM) was established by introducing Abel elements and Nonlinear elements, and the constitutive equation of the model was deduced. The new model can fully reflect the stable decay stage and accelerated rheological stages of coal samples, and the parameter identification curve was consistent with the experimental results, which verifies the correctness and reasonableness of the NFNVRM. Meanwhile, based on the FLAC3D secondary development interface, the constitutive equations of the NFNVRM were written into the software to obtain new Dynamic Link Library (DLL) files. The simulation results were consistent with the experimental results when the DLL file was called. Finally, the NFNVRM.dll was applied to predict the surrounding rock deformation of an S mine. The study's findings offer suggestions for environmental protection.


Asunto(s)
Minas de Carbón , Carbón Mineral , Minería , Ingeniería , Minas de Carbón/métodos
14.
Artículo en Inglés | MEDLINE | ID: mdl-36293935

RESUMEN

In mining engineering, crack distribution has a considerable influence on the mechanical behavior and stability of the surrounding rock mass. Using the granite of the Sanshandao gold mine as experimental samples, the deformation and failure of fractured rock were analyzed based on a rock uniaxial compression test with acoustic emission monitoring. We analyzed the characteristics of different stages of rock sample deformation, and evaluated the failure mode of seven types of rock samples. The results show that the cracks had a considerable impact on rock sample strength and mechanical behavior, and the strength of intact rock was the highest, while that of the sample with parallel double cracks was the lowest. The acoustic emission parameters, AF, RA, and lg(AF/RA), have different change trends in different stages of rock deformation and failure. Based on these change trends, the failure modes of rock samples with different crack distributions were identified. Additionally, for the rock samples with seven types of crack distribution, a sudden or progressive failure caused by the b-value curves was observed. The research findings provide a database for deep surrounding rock stability in the study area and provide suggestions for failure prediction.


Asunto(s)
Acústica , Oro , Minería , Ingeniería
15.
Sensors (Basel) ; 22(17)2022 Aug 24.
Artículo en Inglés | MEDLINE | ID: mdl-36080846

RESUMEN

This work aimed to detect the vegetation coverage and evaluate the benefits of afforestation and ecological protection. Unmanned aerial vehicle (UAV) aerial survey was adopted to obtain the images of tailings area at Ma'anshan near the Dianchi Lake estuary, so as to construct a high-resolution Digital Orthophoto Map (DOM) and high-density Dense Image Matching (DIM) point cloud. Firstly, the optimal scale was selected for segmentation by considering the terrain. Secondly, the visible-band difference vegetation index (VDVI) of the classified vegetation information of the tail mining area was determined from the index gray histogram, ground class error analysis, and the qualitative and quantitative analysis of the bimodal index. Then, the vegetation information was extracted by combining the random forest (RF) classification algorithm. Finally, the extracted two-dimensional (2D) vegetation information was mapped to the three-dimensional (3D) point cloud, and the redundant data was eliminated. Fractional vegetation cover (FVC) was counted in the way of surface to point and human-machine combination. The experimental results showed that the vegetation information extracted from the 2D image was mapped to the 3D point cloud in the form of surface to point, and the redundant bare ground information was eliminated. The statistical FVC was 36.06%. The field survey suggested that the vegetation information in the turf dam area adjacent to the open phosphate deposit accumulation area research area was sparse. Relevant measures should be taken in the subsequent mining to avoid ecological damage caused by expanded phosphate mining. In general, applying UAV measurement technology and related 2D and 3D products to detect the vegetation coverage in an open phosphate mine area was of practical significance and unique technical advantages.


Asunto(s)
Lagos , Tecnología de Sensores Remotos , Humanos , Minería , Fosfatos
16.
Comput Intell Neurosci ; 2022: 1442738, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35720920

RESUMEN

Ecological restoration with the assistance of certain artificial measures is to restore the original ecological function and productivity of the ecosystem or to make the ecosystem develop to a virtuous circle, which is a complex systematic project. Based on this, combined with the actual needs of a mine ecological restoration project, this paper puts forward the technical process and method of quickly acquiring the geographic information of abandoned mines by using the oblique photography technology of unmanned aerial vehicles. The verification results show that the maximum plane/elevation residual error of the checkpoints measured in the field is 0.221 m-0.181 m, and the median error is 0.030 m-0.112 m. According to the encryption requirement of 1∶500 scale topographic mapping in hilly land, the plane position error of the inspection point relative to the field control point should be less than 0.175 m. The elevation should be less than 0.280 m, and the experimental results in this paper can meet the requirements. Oblique photography can provide abundant digital results, and it can play an important role in mine restoration scheme design, restoration construction, and monitoring and management after restoration.


Asunto(s)
Ecosistema , Tecnología de Sensores Remotos , China , Minería , Multimedia , Fotograbar
17.
Sensors (Basel) ; 22(5)2022 Feb 23.
Artículo en Inglés | MEDLINE | ID: mdl-35270881

RESUMEN

The paper presents the developed fiber-optic sensors for monitoring pressure measurement on the elements of mine supports. The sudden destruction of the support leads to the collapse of the mine workings and poses a serious threat to the life and safety of underground workers. A fiber-optic system for monitoring changes in pressures on the elements of mine supports will increase the share of mining automation and reduce the share of manual labor, as well as eliminate measurement errors associated with the human factor. Systematic monitoring of the state of the working elements of the support will allow timely tracking of their deformations caused by an increase in rock pressure on them. Implementation of the system at mining enterprises will expand the use of digital technologies in mining. Timely warning of a mine collapse threat will significantly increase the level of safe mining operations, as well as reduce the cost of supporting mine workings, since elimination of the consequences of destruction is associated with significant material costs. This work presents a developed laboratory testbench that simulates a mine working and elements of an arch support on which are installed the fiber-optic sensors connected to an automated measuring system. The developed hardware and software complex provides the processing of a light spot falling on the surface of a television matrix that is installed at the exit from the optical fiber. The results of visual processing are converted into numerical values, which are used to make a decision about the state of the considered object. In addition to automatic monitoring of the structural integrity condition of the considered object, the system is equipped with a function of a visual display for monitoring results, which makes it possible to track sharp fluctuations and bursts of pressure parameters, based on which the prediction of pre-emergency and emergency situations is performed.


Asunto(s)
Tecnología de Fibra Óptica , Minería , Humanos , Fibras Ópticas
18.
Artículo en Inglés | MEDLINE | ID: mdl-35206524

RESUMEN

Introduction Industry 4.0 has enhanced technological development in all fields. Currently, one can analyse, treat, and model completely different variables in real time; these include production, environmental, and occupational variables. Resultingly, there has been a significant improvement in the quality of life of workers, the environment, and in businesses in general, encouraging the implementation of continuous improvement measures. However, it is not entirely clear how the mining industry is evolving alongside this industrial evolution. With this in mind, this systematic review aimed to find sensing technology applications within this sector, in order to assist the mining industry in its goal to evolve digitally. METHODOLOGY: The research and reporting of this article were carried out by means of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. RESULTS AND DISCUSSION: A total of 29 papers were included in the study, with sensors being applied in several fields, namely safety, management, and localisation. Three different implementation phases were identified regarding its execution: prototype, trial, and (already) implemented. The overall results highlighted that many mechanisms are in need of improvement in underground settings. This might be due to the fact that underground mining has particular safety challenges. CONCLUSIONS: Ventilation and mapping are primary issues to be solved in the underground setting. With regard to the surface setting, the focus is directed toward slope stability and ways of improving it regarding monitoring and prevention. The literature screening revealed a tendency in these systems to keep advancing in technologically, becoming increasingly more intelligent. In the near future, it is expected that a more technologically advanced mining industry will arise, and this will be created and sustained by the optimisation of processes, equipment, and work practices, in order to improve both the quality of life of people and the health of the environment.


Asunto(s)
Minería , Calidad de Vida , Humanos , Industrias , Tecnología
19.
PLoS One ; 17(2): e0263870, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35157729

RESUMEN

The mining industry production is an important pillar industry in China, while its extensive production activities have led to several ecological and environmental problems. Earth observation technology using high-resolution satellite imagery can help us efficiently obtain information on surface elements, surveying and monitoring various land occupation issues arising from open-pit mining production activities. Conventional pixel-based interpretation methods for high-resolution remote sensing images are restricted by "salt and pepper" noise caused by environmental factors, making it difficult to meet increasing requirements for monitoring accuracy. With the Jingxiang phosphorus mining area in Jingmen Hubei Province as the studied area, this paper uses a multi-scale segmentation algorithm to extract large-scale main characteristic information using a layered mask method based on the hierarchical structure of the image object. The remaining characteristic elements were classified and extracted in combination with the random forest model and characteristic factors to obtain land occupation information related mining industry production, which was compared with the results of the Classification and Regression Tree model. 23 characteristic factors in three aspects were selected, including spectral, geometric and texture characteristics. The methods employed in this study achieved 86% and 0.78 respectively in overall extraction accuracy analysis and the Kappa coefficient analysis, compared to 79% and 0.68 using the conventional method.


Asunto(s)
Minería/clasificación , Fósforo , Imágenes Satelitales/métodos , Algoritmos , Monitoreo del Ambiente , Tecnología de Sensores Remotos
20.
Int J Occup Saf Ergon ; 28(1): 581-589, 2022 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-33342360

RESUMEN

Major technological advances that are being introduced in the global mining industry have an impact on work and employee attitudes toward safety. The objective of this study was to analyze the impact of empowerment and technology on safety behavior. The research design was cross-sectional, and the sample was composed of 403 employees in mining companies. To measure safety behavior we used Neal, Griffin and Hart scales, and psychological empowerment was measured using the Spreitzer scale. The results indicated high levels of empowerment on safety behavior and medium levels of technology's promotion and prevention factors in the employees surveyed. Also, the study revealed that the meaning dimension of empowerment and the promotion technology factor positively affect safety behavior. A further contribution of the study is in the design of a scale to measure the impact of technology on safety behavior, as there are no known scales for this.


Asunto(s)
Conductas Relacionadas con la Salud , Minería , Estudios Transversales , Humanos , Encuestas y Cuestionarios , Tecnología
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