Study on Ventilation System Linkage Control Strategy in a Double-Hole Tunnel Fire
In order to prevent smoke from flowing backward and penetrating into adjacent tunnel through cross channels during evacuation in case of fire accidents in highway tunnels, it is extremely necessary to implement the linkage control scheme for double-hole tunnel ventilation system. Therefore, six link...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/5163632 |
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| author | Yizhou Zhuang Hao Ding Guoping Zheng Youkai Cui Yan Huang |
| author_facet | Yizhou Zhuang Hao Ding Guoping Zheng Youkai Cui Yan Huang |
| author_sort | Yizhou Zhuang |
| collection | DOAJ |
| description | In order to prevent smoke from flowing backward and penetrating into adjacent tunnel through cross channels during evacuation in case of fire accidents in highway tunnels, it is extremely necessary to implement the linkage control scheme for double-hole tunnel ventilation system. Therefore, six linkage control schemes for ventilation system are proposed in this article. Firstly, these six schemes were numerically simulated through Fire Dynamics Simulator (FDS) to obtain the flow velocity, flow direction, and smoke distribution under different schemes when the peak power of fire accidents is 30 MW. And two better schemes were selected for further investigation based on the evacuation conditions in the upper stream of fire source. Secondly, a 1 : 10 scale model experiment was conducted to test these two schemes, and the results from numerical simulation and model experiment were compared and verified. Finally, the location of fire accident, the time to develop stable opposite airflow, and the number of open cross channels were analyzed to confirm the applicability of the recommended scheme. The results show that the optimal scheme is to switch on the fans in the upstream of the fire accident and the fans on both sides of the cross channel in the non-fire tunnel to form positive pressure to control the smoke flow. This scheme ensures a stable and uniform smoke flow in the cross channel and personnel’s safety during evacuation. |
| format | Article |
| id | doaj-art-0b6314a01e66455c9a6ad75d6ce36623 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-0b6314a01e66455c9a6ad75d6ce366232025-02-03T01:04:46ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422020-01-01202010.1155/2020/51636325163632Study on Ventilation System Linkage Control Strategy in a Double-Hole Tunnel FireYizhou Zhuang0Hao Ding1Guoping Zheng2Youkai Cui3Yan Huang4College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310000, ChinaCollege of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310000, ChinaCollege of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310000, ChinaZhejiang Provincial Institute of Communications, Planning, Design and Research, Hangzhou 310000, ChinaConsultant, Zhoushan, ChinaIn order to prevent smoke from flowing backward and penetrating into adjacent tunnel through cross channels during evacuation in case of fire accidents in highway tunnels, it is extremely necessary to implement the linkage control scheme for double-hole tunnel ventilation system. Therefore, six linkage control schemes for ventilation system are proposed in this article. Firstly, these six schemes were numerically simulated through Fire Dynamics Simulator (FDS) to obtain the flow velocity, flow direction, and smoke distribution under different schemes when the peak power of fire accidents is 30 MW. And two better schemes were selected for further investigation based on the evacuation conditions in the upper stream of fire source. Secondly, a 1 : 10 scale model experiment was conducted to test these two schemes, and the results from numerical simulation and model experiment were compared and verified. Finally, the location of fire accident, the time to develop stable opposite airflow, and the number of open cross channels were analyzed to confirm the applicability of the recommended scheme. The results show that the optimal scheme is to switch on the fans in the upstream of the fire accident and the fans on both sides of the cross channel in the non-fire tunnel to form positive pressure to control the smoke flow. This scheme ensures a stable and uniform smoke flow in the cross channel and personnel’s safety during evacuation.http://dx.doi.org/10.1155/2020/5163632 |
| spellingShingle | Yizhou Zhuang Hao Ding Guoping Zheng Youkai Cui Yan Huang Study on Ventilation System Linkage Control Strategy in a Double-Hole Tunnel Fire Advances in Materials Science and Engineering |
| title | Study on Ventilation System Linkage Control Strategy in a Double-Hole Tunnel Fire |
| title_full | Study on Ventilation System Linkage Control Strategy in a Double-Hole Tunnel Fire |
| title_fullStr | Study on Ventilation System Linkage Control Strategy in a Double-Hole Tunnel Fire |
| title_full_unstemmed | Study on Ventilation System Linkage Control Strategy in a Double-Hole Tunnel Fire |
| title_short | Study on Ventilation System Linkage Control Strategy in a Double-Hole Tunnel Fire |
| title_sort | study on ventilation system linkage control strategy in a double hole tunnel fire |
| url | http://dx.doi.org/10.1155/2020/5163632 |
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