Analysis on the dust prevention mechanism of air curtain in fully mechanized excavation tunnel
Abstract Aiming at reducing the dust pollution during the tunneling process and improving the application efficiency of air curtain dust prevention technology, according to the changes of radial jet velocity (v r), axial extraction velocity (v e) and extraction distance (L) in the formation process...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-01-01
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| Series: | International Journal of Coal Science & Technology |
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| Online Access: | https://doi.org/10.1007/s40789-025-00752-x |
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| author | Hao Wang Chuangye Xin Shouqing Lu Yongliang Zhang Zhanyou Sa Jinxu Tao Zhuang Liu |
| author_facet | Hao Wang Chuangye Xin Shouqing Lu Yongliang Zhang Zhanyou Sa Jinxu Tao Zhuang Liu |
| author_sort | Hao Wang |
| collection | DOAJ |
| description | Abstract Aiming at reducing the dust pollution during the tunneling process and improving the application efficiency of air curtain dust prevention technology, according to the changes of radial jet velocity (v r), axial extraction velocity (v e) and extraction distance (L) in the formation process of air curtain, the numerical simulation method was used to analyze the rules of airflow structure evolution and the diffusion characteristics of dust particles in fully mechanized excavation tunnel. The results indicate that as v r and v e increase, the migration path of the wall jet of the air curtain changes into an axial direction; as L decreases, the migration distance increases accordingly. These phenomena make the airflow distribution in the working face tends to be uniform. The dust diffusion distance reduces as well, wherein, the range of the discrete area of dust particles decreases sharply, until all dust particles are concentrated in the accumulation area. On this basis, the v r, v e and L were optimized and applied in the 63up08 fully mechanized working face. By the application of the optimal parameters, the average dust removal efficiency at the driver’s position increased by 71%. The dust concentration was reduced and the working environment had been improved effectively. |
| format | Article |
| id | doaj-art-d84d0ed51b554b4e8e2c1ba4b08c7cd4 |
| institution | Kabale University |
| issn | 2095-8293 2198-7823 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | International Journal of Coal Science & Technology |
| spelling | doaj-art-d84d0ed51b554b4e8e2c1ba4b08c7cd42025-02-02T12:05:43ZengSpringerOpenInternational Journal of Coal Science & Technology2095-82932198-78232025-01-0112111410.1007/s40789-025-00752-xAnalysis on the dust prevention mechanism of air curtain in fully mechanized excavation tunnelHao Wang0Chuangye Xin1Shouqing Lu2Yongliang Zhang3Zhanyou Sa4Jinxu Tao5Zhuang Liu6Department of Safety Science and Engineering, Qingdao University of TechnologyDepartment of Safety Science and Engineering, Qingdao University of TechnologyDepartment of Safety Science and Engineering, Qingdao University of TechnologyDepartment of Safety Science and Engineering, Qingdao University of TechnologyDepartment of Safety Science and Engineering, Qingdao University of TechnologyDepartment of Safety Science and Engineering, Qingdao University of TechnologyDepartment of Safety Science and Engineering, Qingdao University of TechnologyAbstract Aiming at reducing the dust pollution during the tunneling process and improving the application efficiency of air curtain dust prevention technology, according to the changes of radial jet velocity (v r), axial extraction velocity (v e) and extraction distance (L) in the formation process of air curtain, the numerical simulation method was used to analyze the rules of airflow structure evolution and the diffusion characteristics of dust particles in fully mechanized excavation tunnel. The results indicate that as v r and v e increase, the migration path of the wall jet of the air curtain changes into an axial direction; as L decreases, the migration distance increases accordingly. These phenomena make the airflow distribution in the working face tends to be uniform. The dust diffusion distance reduces as well, wherein, the range of the discrete area of dust particles decreases sharply, until all dust particles are concentrated in the accumulation area. On this basis, the v r, v e and L were optimized and applied in the 63up08 fully mechanized working face. By the application of the optimal parameters, the average dust removal efficiency at the driver’s position increased by 71%. The dust concentration was reduced and the working environment had been improved effectively.https://doi.org/10.1007/s40789-025-00752-xAir curtainDust prevention mechanismAirflow structure evolutionDust diffusionFully mechanized excavation tunnel |
| spellingShingle | Hao Wang Chuangye Xin Shouqing Lu Yongliang Zhang Zhanyou Sa Jinxu Tao Zhuang Liu Analysis on the dust prevention mechanism of air curtain in fully mechanized excavation tunnel International Journal of Coal Science & Technology Air curtain Dust prevention mechanism Airflow structure evolution Dust diffusion Fully mechanized excavation tunnel |
| title | Analysis on the dust prevention mechanism of air curtain in fully mechanized excavation tunnel |
| title_full | Analysis on the dust prevention mechanism of air curtain in fully mechanized excavation tunnel |
| title_fullStr | Analysis on the dust prevention mechanism of air curtain in fully mechanized excavation tunnel |
| title_full_unstemmed | Analysis on the dust prevention mechanism of air curtain in fully mechanized excavation tunnel |
| title_short | Analysis on the dust prevention mechanism of air curtain in fully mechanized excavation tunnel |
| title_sort | analysis on the dust prevention mechanism of air curtain in fully mechanized excavation tunnel |
| topic | Air curtain Dust prevention mechanism Airflow structure evolution Dust diffusion Fully mechanized excavation tunnel |
| url | https://doi.org/10.1007/s40789-025-00752-x |
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