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Study on dust control technology of mobile spray combined with full-section fog curtain in return airway of header working face
For the problem of coal dust pollution in the return air lane of the comprehensive mining working face of soft rock mines.Based on the principle of supersonic siphon pneumatic atomization dust control, mobile vehicle-mounted pneumatic spraying combined with full-section fog curtain dust control tech...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9671302/ https://www.ncbi.nlm.nih.gov/pubmed/36395122 http://dx.doi.org/10.1371/journal.pone.0277710 |
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author | Jing, Deji Liu, Hongwei Zhang, Tian Ge, Shaocheng Jiang, Zhuo Zhang, Qiang |
author_facet | Jing, Deji Liu, Hongwei Zhang, Tian Ge, Shaocheng Jiang, Zhuo Zhang, Qiang |
author_sort | Jing, Deji |
collection | PubMed |
description | For the problem of coal dust pollution in the return air lane of the comprehensive mining working face of soft rock mines.Based on the principle of supersonic siphon pneumatic atomization dust control, mobile vehicle-mounted pneumatic spraying combined with full-section fog curtain dust control technology is proposed to address the coal dust pollution problem in the return air tunnel of the comprehensive mining working face of soft rock mines. This technology has a wider spraying range, stronger wind resistance and lower energy consumption.Using the k-ε turbulence module and the fluid flow particle tracking module of COMSOL simulation software, a three-dimensional numerical model of the return air tunnel was established. The effect of wind flow characteristics on the diffusion range of coal dust and fog droplets was analysed, and the dust transport pattern and dust control effect of the new technology were obtained for different cross-sectional return airways. The results show that the velocity of the wind flow is continuously decayed by the slope, and the dust of different particle sizes is distributed differently by the inertial force. Coal dust with particle sizes larger than 6.5 μm accumulates below the structure at a lower velocity, and coal dust with particle sizes smaller than 4.5 μm is mostly suspended above the structure at a higher velocity. The device effectively stops the transport of dust and covers the whole section of the roadway, and the dust removal efficiency reaches 96.53%~97.93%, which provides relevant theoretical support and treatment means for the control of dust pollution in the return airway of coal mines. |
format | Online Article Text |
id | pubmed-9671302 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-96713022022-11-18 Study on dust control technology of mobile spray combined with full-section fog curtain in return airway of header working face Jing, Deji Liu, Hongwei Zhang, Tian Ge, Shaocheng Jiang, Zhuo Zhang, Qiang PLoS One Research Article For the problem of coal dust pollution in the return air lane of the comprehensive mining working face of soft rock mines.Based on the principle of supersonic siphon pneumatic atomization dust control, mobile vehicle-mounted pneumatic spraying combined with full-section fog curtain dust control technology is proposed to address the coal dust pollution problem in the return air tunnel of the comprehensive mining working face of soft rock mines. This technology has a wider spraying range, stronger wind resistance and lower energy consumption.Using the k-ε turbulence module and the fluid flow particle tracking module of COMSOL simulation software, a three-dimensional numerical model of the return air tunnel was established. The effect of wind flow characteristics on the diffusion range of coal dust and fog droplets was analysed, and the dust transport pattern and dust control effect of the new technology were obtained for different cross-sectional return airways. The results show that the velocity of the wind flow is continuously decayed by the slope, and the dust of different particle sizes is distributed differently by the inertial force. Coal dust with particle sizes larger than 6.5 μm accumulates below the structure at a lower velocity, and coal dust with particle sizes smaller than 4.5 μm is mostly suspended above the structure at a higher velocity. The device effectively stops the transport of dust and covers the whole section of the roadway, and the dust removal efficiency reaches 96.53%~97.93%, which provides relevant theoretical support and treatment means for the control of dust pollution in the return airway of coal mines. Public Library of Science 2022-11-17 /pmc/articles/PMC9671302/ /pubmed/36395122 http://dx.doi.org/10.1371/journal.pone.0277710 Text en © 2022 Jing et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Jing, Deji Liu, Hongwei Zhang, Tian Ge, Shaocheng Jiang, Zhuo Zhang, Qiang Study on dust control technology of mobile spray combined with full-section fog curtain in return airway of header working face |
title | Study on dust control technology of mobile spray combined with full-section fog curtain in return airway of header working face |
title_full | Study on dust control technology of mobile spray combined with full-section fog curtain in return airway of header working face |
title_fullStr | Study on dust control technology of mobile spray combined with full-section fog curtain in return airway of header working face |
title_full_unstemmed | Study on dust control technology of mobile spray combined with full-section fog curtain in return airway of header working face |
title_short | Study on dust control technology of mobile spray combined with full-section fog curtain in return airway of header working face |
title_sort | study on dust control technology of mobile spray combined with full-section fog curtain in return airway of header working face |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9671302/ https://www.ncbi.nlm.nih.gov/pubmed/36395122 http://dx.doi.org/10.1371/journal.pone.0277710 |
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