An Orderly Untangling Model against Arching Effect in Emergency Evacuation Based on Equilibrium Partition of Crowd
To untangle the arching effect of a crowd as much as possible in emergency evacuations, we employ a theoretical model of equilibrium partition of crowd batch. Based on the shortest time arrangement of evacuation, the crowd is divided into appropriate batches according to the occupied time of evacuat...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Discrete Dynamics in Nature and Society |
| Online Access: | http://dx.doi.org/10.1155/2017/2757939 |
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| _version_ | 1832549184206536704 |
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| author | Lianghai Jin Mingzhang Xiang Shu Chen Xiazhong Zheng Ruojun Yao Yangao Chen |
| author_facet | Lianghai Jin Mingzhang Xiang Shu Chen Xiazhong Zheng Ruojun Yao Yangao Chen |
| author_sort | Lianghai Jin |
| collection | DOAJ |
| description | To untangle the arching effect of a crowd as much as possible in emergency evacuations, we employ a theoretical model of equilibrium partition of crowd batch. Based on the shortest time arrangement of evacuation, the crowd is divided into appropriate batches according to the occupied time of evacuation channel in order to determine the occupant number of every evacuation passageway. The number of each batch crowd is calculated under the condition that the time of entering the evacuation passageway is equal to the time of crossing over the evacuation passageway. Subsequently, the shortest processing time (SPT) rule establishes the evacuation order of each batch. Taking a canteen of China Three Gorges University as a background, we obtain the waiting time from the first person to the last one entering the evacuation channel in every batch by simulation. This research utilizes data from simulations to observe an untangling process against the arching effect based on the SPT rule. More specifically, evacuation time only lasts for 180.1 s in order and is 1.6 s longer than that in disorder, but the arching effect disappears. Policy recommendations are offered to improve the evacuation scheme in disaster operations. |
| format | Article |
| id | doaj-art-9b665b8dd43b4d4b9568f9c4a50a66a8 |
| institution | Kabale University |
| issn | 1026-0226 1607-887X |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Discrete Dynamics in Nature and Society |
| spelling | doaj-art-9b665b8dd43b4d4b9568f9c4a50a66a82025-02-03T06:12:03ZengWileyDiscrete Dynamics in Nature and Society1026-02261607-887X2017-01-01201710.1155/2017/27579392757939An Orderly Untangling Model against Arching Effect in Emergency Evacuation Based on Equilibrium Partition of CrowdLianghai Jin0Mingzhang Xiang1Shu Chen2Xiazhong Zheng3Ruojun Yao4Yangao Chen5Hubei Key Laboratory of Construction and Management in Hydropower Engineering, Yichang, Hubei 443002, ChinaHubei Key Laboratory of Construction and Management in Hydropower Engineering, Yichang, Hubei 443002, ChinaHubei Key Laboratory of Construction and Management in Hydropower Engineering, Yichang, Hubei 443002, ChinaHubei Key Laboratory of Construction and Management in Hydropower Engineering, Yichang, Hubei 443002, ChinaChina Institute of Water Resources and Hydropower Research, Beijing 100038, ChinaSinohydro Bureau 7 Co., Ltd., Chengdu, Sichuan 610081, ChinaTo untangle the arching effect of a crowd as much as possible in emergency evacuations, we employ a theoretical model of equilibrium partition of crowd batch. Based on the shortest time arrangement of evacuation, the crowd is divided into appropriate batches according to the occupied time of evacuation channel in order to determine the occupant number of every evacuation passageway. The number of each batch crowd is calculated under the condition that the time of entering the evacuation passageway is equal to the time of crossing over the evacuation passageway. Subsequently, the shortest processing time (SPT) rule establishes the evacuation order of each batch. Taking a canteen of China Three Gorges University as a background, we obtain the waiting time from the first person to the last one entering the evacuation channel in every batch by simulation. This research utilizes data from simulations to observe an untangling process against the arching effect based on the SPT rule. More specifically, evacuation time only lasts for 180.1 s in order and is 1.6 s longer than that in disorder, but the arching effect disappears. Policy recommendations are offered to improve the evacuation scheme in disaster operations.http://dx.doi.org/10.1155/2017/2757939 |
| spellingShingle | Lianghai Jin Mingzhang Xiang Shu Chen Xiazhong Zheng Ruojun Yao Yangao Chen An Orderly Untangling Model against Arching Effect in Emergency Evacuation Based on Equilibrium Partition of Crowd Discrete Dynamics in Nature and Society |
| title | An Orderly Untangling Model against Arching Effect in Emergency Evacuation Based on Equilibrium Partition of Crowd |
| title_full | An Orderly Untangling Model against Arching Effect in Emergency Evacuation Based on Equilibrium Partition of Crowd |
| title_fullStr | An Orderly Untangling Model against Arching Effect in Emergency Evacuation Based on Equilibrium Partition of Crowd |
| title_full_unstemmed | An Orderly Untangling Model against Arching Effect in Emergency Evacuation Based on Equilibrium Partition of Crowd |
| title_short | An Orderly Untangling Model against Arching Effect in Emergency Evacuation Based on Equilibrium Partition of Crowd |
| title_sort | orderly untangling model against arching effect in emergency evacuation based on equilibrium partition of crowd |
| url | http://dx.doi.org/10.1155/2017/2757939 |
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