Citation

Hu C, Li J, Li Q, Chen J. China Saf. Sci. J. 2021; 31(6): 136-143.

Copyright

(Copyright © 2021, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2021.06.018

PMID

unavailable

Abstract

In order to prevent crowds gathering risks and trampling events in public places. Based on spatial-temporal distribution characteristics of crowds gathering in public places, unbalanced coefficient of spatial distribution and variation coefficient of temporal distribution of crowd gathering were proposed to improve safety capacity algorithm with consideration of evacuation time, basic algorithm of instantaneous safety capacity and daily safety capacity were improved. Taking Beijing Shichahai scenic spot as an example, corrected instantaneous safety capacity and daily safety capacity were respectively 47. 8% and 33% of base value. The results show that difference of spatial and temporal distribution of population gathering is the root cause of high risk of population gathering in local time or specific region. Considering space unbalance and time fluctuation is helpful to improve accuracy of regional safety capacity, case proves that the improved method is more in line with the needs of safety management in public places. © 2021 China Safety Science Journal. All rights reserved.

Language: zh