Experimental study on gas diffusion in subway station
In this paper, three-dimensional ultrasonic anemometer and multi-channel anemometer have been used to monitor the flow field of a subway station in Beijing. Based on releasing sulfur hexafluoride (SF6) in the station hall, the gas transmission and diffusion range have been studied. The results show...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2022-01-01
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| Series: | ITM Web of Conferences |
| Online Access: | https://www.itm-conferences.org/articles/itmconf/pdf/2022/07/itmconf_cccar2022_02037.pdf |
| _version_ | 1818215063529455616 |
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| author | Wang Lei Zhang Kun Zhang Jinrui Peng Meng Kang Jian Xu Jiayu |
| author_facet | Wang Lei Zhang Kun Zhang Jinrui Peng Meng Kang Jian Xu Jiayu |
| author_sort | Wang Lei |
| collection | DOAJ |
| description | In this paper, three-dimensional ultrasonic anemometer and multi-channel anemometer have been used to monitor the flow field of a subway station in Beijing. Based on releasing sulfur hexafluoride (SF6) in the station hall, the gas transmission and diffusion range have been studied. The results show that under the natural ventilation, the gas diffusion would be controlled by a regular mainstream field. Because of obvious subsidence heavy gas tends to accumulate on the ground. The airflow on the north side of the platform is stable, which may be the main channel for gas diffusion and the gas will not be transmitted downward to the platform. As a result, during emergency response During emergency disposal, it is necessary to set an evacuation path opposite to gas diffusion. Besides, it is forbidden to turn on the top smoke exhaust system to avoid the transmission of pollutant on the ground to the breathing height. |
| first_indexed | 2024-12-12T06:30:07Z |
| format | Article |
| id | doaj.art-a1f11a6d5366464d85d19209f7feb8a7 |
| institution | Directory Open Access Journal |
| issn | 2271-2097 |
| language | English |
| last_indexed | 2024-12-12T06:30:07Z |
| publishDate | 2022-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | ITM Web of Conferences |
| spelling | doaj.art-a1f11a6d5366464d85d19209f7feb8a72022-12-22T00:34:37ZengEDP SciencesITM Web of Conferences2271-20972022-01-01470203710.1051/itmconf/20224702037itmconf_cccar2022_02037Experimental study on gas diffusion in subway stationWang Lei0Zhang Kun1Zhang Jinrui2Peng Meng3Kang Jian4Xu Jiayu5Research Institute of Chemical Defence, State Key Laboratory of NBC Protection for CivilianTsinghua University, School of EnvironmentResearch Institute of Chemical Defence, State Key Laboratory of NBC Protection for CivilianTsinghua University, School of EnvironmentResearch Institute of Chemical Defence, State Key Laboratory of NBC Protection for CivilianTsinghua University, School of EnvironmentIn this paper, three-dimensional ultrasonic anemometer and multi-channel anemometer have been used to monitor the flow field of a subway station in Beijing. Based on releasing sulfur hexafluoride (SF6) in the station hall, the gas transmission and diffusion range have been studied. The results show that under the natural ventilation, the gas diffusion would be controlled by a regular mainstream field. Because of obvious subsidence heavy gas tends to accumulate on the ground. The airflow on the north side of the platform is stable, which may be the main channel for gas diffusion and the gas will not be transmitted downward to the platform. As a result, during emergency response During emergency disposal, it is necessary to set an evacuation path opposite to gas diffusion. Besides, it is forbidden to turn on the top smoke exhaust system to avoid the transmission of pollutant on the ground to the breathing height.https://www.itm-conferences.org/articles/itmconf/pdf/2022/07/itmconf_cccar2022_02037.pdf |
| spellingShingle | Wang Lei Zhang Kun Zhang Jinrui Peng Meng Kang Jian Xu Jiayu Experimental study on gas diffusion in subway station ITM Web of Conferences |
| title | Experimental study on gas diffusion in subway station |
| title_full | Experimental study on gas diffusion in subway station |
| title_fullStr | Experimental study on gas diffusion in subway station |
| title_full_unstemmed | Experimental study on gas diffusion in subway station |
| title_short | Experimental study on gas diffusion in subway station |
| title_sort | experimental study on gas diffusion in subway station |
| url | https://www.itm-conferences.org/articles/itmconf/pdf/2022/07/itmconf_cccar2022_02037.pdf |
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