Emergency evacuation risk assessment and mitigation strategy for a toxic gas leak in an underground space: The case of a subway station in Guangzhou, China

2021 ◽  
Vol 134 ◽  
pp. 105039 ◽  
Author(s):  
Jian Rui Feng ◽  
Wen-mei Gai ◽  
Ya-bin Yan
Keyword(s):  
Risk Assessment ◽  
Emergency Evacuation ◽  
Mitigation Strategy ◽  
Subway Station ◽  
Underground Space ◽  
Gas Leak ◽  
Toxic Gas ◽  
Evacuation Risk

scholarly journals Pedestrian Evacuation Risk Assessment of Subway Station under Large-Scale Sport Activity

2020 ◽  
Vol 17 (11) ◽  
pp. 3844 ◽  
Author(s):  
Zeyang Cheng ◽  
Jian Lu ◽  
Yi Zhao
Keyword(s):  
Risk Assessment ◽  
Large Scale ◽  
Sport Activity ◽  
Pedestrian Safety ◽  
Assessment Model ◽  
Subway Station ◽  
Force Model ◽  
Pedestrian Evacuation ◽  
Subway Stations ◽  
Evacuation Risk

Pedestrian evacuation risk of subway stations is an important concern in city management, as it not only endangers public safety but also affects the efficiency of urban subway transportation. Determination of how to effectively evaluate the pedestrian evacuation risk of subway stations is of great significance to improve pedestrian safety. Previous studies about the pedestrian evacuation of subway station were primarily focused on pedestrian moving behaviors and the evacuation modeling, and the evacuation scenario is the regular subway operation. There is a dearth of studies to quantify the pedestrian evacuation risk in the evacuation process, especially the pedestrian evacuation risk quantitative characterization of subway station in large-scale sport activity. The current study develops a quantitative pedestrian evacuation risk assessment model that integrates pedestrian stampede probability and pedestrian casualty. Then several different simulation scenarios based on the social force model (SFM) are simulated to evaluate the pedestrian evacuation risk of the “Olympic Park Station” in Beijing, China. The results demonstrate that the pedestrian evacuation method, pedestrian stampede location, and distance from the stampede location to the ticket gate have a large impact on pedestrian evacuation risk. Then, the pedestrian evacuation scenarios with the lowest and highest risk for the “Olympic Park Station” in large-scale sport activity are determined. The findings have potential applications in pedestrian safety protection of subway station during large-scale sports activity.

scholarly journals Ex-ante online risk assessment for building emergency evacuation through multimedia data

PLoS ONE ◽  
2019 ◽  
Vol 14 (4) ◽  
pp. e0215149 ◽  
Author(s):  
Haoran Zhang ◽  
Xuan Song ◽  
Xiaoya Song ◽  
Dou Huang ◽  
Ning Xu ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Emergency Evacuation ◽  
Multimedia Data ◽  
Online Risk ◽  
Ex Ante

STUDY ON RADON CONCENTRATION VARIATION DURING SUBWAY CONSTRUCTION

2020 ◽  
Vol 191 (4) ◽  
pp. 409-422
Author(s):  
Bo Tan ◽  
Guangyuan Yang ◽  
Shuhui Fu ◽  
Cheng Xu
Keyword(s):  
Ambient Temperature ◽  
Radon Concentration ◽  
Comprehensive Analysis ◽  
Subway Station ◽  
Underground Space ◽  
Measuring Point ◽  
Low Level ◽  
Subway Construction ◽  
Under Construction ◽  
High Level

Abstract The high radon concentration in the underground space of the subway station during construction often endangers the health of workers. Subway station project No. 16 in Beijing, while under construction, was selected as the main measuring point, a year’s monitoring data was obtained to analyse the change of radon concentration. It was found that the concentration of radon was basically within the range of 5 ~ 500 Bq/m3 and showing a low level in the morning and a high level at noon, and presents the seasonal rule, compared with other seasons, the summer radiation is stronger. Furthermore, among the different measuring points, the radon concentration of the heading roadway is the highest, and the construction level of the station hall is the lowest. According to the comprehensive analysis, the concentration of radon during the construction of the subway station is mainly affected by the ambient temperature and air mobility.

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