Dynamic dispersion and high-rise release of coal dust in the working surface of a large-scale mine and application of a new wet dust reduction technology

Yang, Bo; Nie, Wen; Du, Tao; Peng, Huitian; Zhang, Xu; Zhang, Yilong

doi:10.1016/j.jclepro.2022.131356

Cited by 77 publications

(9 citation statements)

References 34 publications

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“…1, pneumoconiosis cases in China exceed 10,000 each year, accounting for more than 80% of the new occupational disease cases. Moreover, this proportion is still on the rise, causing a huge labor loss to the country (Nie et al 2022, Zhou et al 2022a. Additionally, the increased concentration of coal dust in underground coal mines exacerbated dangerous coal dust explosions, causing serious harm to miners (Liang et al 2021, Wang et al 2020.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on a novel double Y-shaped filter and its dust removal characteristics

Jiang

Yuan

et al. 2023

Preprint

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For efficient and energy-saving purification of underground coal dust, a double Y-shaped filter device with a pneumatic fan as the power source was presented and tested. Numerical simulation results showed that the dust removal resistance of the double Y-shaped filter was lower than that of the conventional parallel filter. Next, filtration performance was evaluated and the morphology of water film on the filter was analyzed. It was discovered that a moderate filtration velocity was beneficial in increasing dust removal efficiency and the density of the fiber grid was proportional to the dust removal efficiency of the equipment. Conversely, an excess filtration velocity will increase the dust removal resistance and decrease the dust removal performance. According to quality factor evaluation, the optimum performance parameters for this equipment were 60 mesh density fiber grid, 0.6 MPa spray pressure, and 5 m/s filtration velocity. Under these conditions, the dust removal efficiency was 98.2%, and the dust removal resistance was 169.6 Pa. The results obtained in this study showed that this device can provide a new idea for efficient, low resistance and dust removal without electricity in underground coal mines.

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Section: Introductionmentioning

confidence: 99%

Experimental study on a novel double Y-shaped filter and its dust removal characteristics

Jiang

Yuan

et al. 2023

Preprint

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“…Simultaneously, with the gradual depletion of shallow mineral resources (Wang et al 2022d ), the exploitation of mineral resources step by step develops towards the environment with harsh geological and structural conditions such as high altitude, high ground temperature, and large buried depth (Wang et al 2022e ). The complexity of processes in the mine workplaces, the differentiation of equipment control strategies, and the perturbation of equipment coordination have raised higher requirements for clean (Nie et al 2022 ) and healthy mining (Jordanova et al 2021 ; Peng et al 2022 ).…”

Section: Introductionmentioning

confidence: 99%

“…Cheng et al ( 2016 ) studied diffusion and pollution mechanisms of airborne dust in a fully mechanized excavation face at mesoscopic scale. Nie et al ( 2022 ) simulated the dynamic dispersion pattern of dust in coal mine excavation working surface on the basis of computational fluid dynamics (CFD). Zhou et al ( 2018 ) utilized numerical simulation to analyze the variation characteristics of airflow-dust diffusion rules during coal cutting in a fully mechanized coal mining face.…”

Section: Introductionmentioning

confidence: 99%

Spatial and temporal evolution of mine dust research: visual knowledge mapping analysis in Web of Science from 2001 to 2021

Zeng

Jiang

2023

Environ Sci Pollut Res

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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.

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“… 7 − 9 Despite this, the average coal dust reduction efficiencies were 73 and 82% when applied a new dust reduction technology. 10 It is challenging for mining below 4.0 (total dust) and 2.5 mg/m 3 (respirable dust) to meet the regulation of the National Health and Wellness Committee of China. 11 According to statistics, the accumulation of coal dust would seriously result in poor air circulation and reduce its visibility during working.…”

Section: Introductionmentioning

confidence: 99%

“…With the increase in coal production for sharp energy consumption, coal dust is more likely to be generated, which leads to a great risk of occupational diseasespneumoconiosis. − Related literature revealed that the dust concentration in the main dust-producing site of coal mine can be as high as 3000–5000 mg/m 3 without no dust-prevention measures . Nowadays, the use of different coal dust suppression systems and technology, including ventilation, air purification via dust collector, and dust reduction via spraying, has attracted much attention. − Despite this, the average coal dust reduction efficiencies were 73 and 82% when applied a new dust reduction technology . It is challenging for mining below 4.0 (total dust) and 2.5 mg/m 3 (respirable dust) to meet the regulation of the National Health and Wellness Committee of China .…”

Section: Introductionmentioning

confidence: 99%

Research on the Effect of Extinction Characteristics of Coal Dust on Visibility

Yan

Liu

et al. 2022

ACS Omega

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A good knowledge of the reduction mechanism of visibility is fundamental to developing preventive strategies in coal mines. In this work, the Mie theory was selected for investigating the absorption and scattering of coal dust. A prediction model for evaluating the visibility was developed based on the extinction characteristics of coal dust. The optical properties have been discussed to simplify the model and clarify the relationships among the different wavelengths and diameters. Additionally, the variety of extinction coefficients can be reasonably used in guiding the calculated visibility under different conditions. The experimental results demonstrated that the reduction of visibility was attributed to the synergistic effect of the extinction of coal dust and droplet. For the field application of this prediction model, the relative errors of the calculated and measured visibility were 9.8 and 7.1% from models I and II, which reflected the small deviation between the two methods. The prediction model can accurately describe the visibility in mines due to coal dust pollution. The exploration results provide a significant reference for the development and application of air cleaning technology for increased visibility.

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Dynamic dispersion and high-rise release of coal dust in the working surface of a large-scale mine and application of a new wet dust reduction technology

Cited by 77 publications

References 34 publications

Experimental study on a novel double Y-shaped filter and its dust removal characteristics

Experimental study on a novel double Y-shaped filter and its dust removal characteristics

Spatial and temporal evolution of mine dust research: visual knowledge mapping analysis in Web of Science from 2001 to 2021

Research on the Effect of Extinction Characteristics of Coal Dust on Visibility

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