Elevator-assisted evacuation efficiency of deeply buried subway station under influence of multiple factors

doi:10.16265/j.cnki.issn1003-3033.2025.03.0009

Abstract

Abstract:

To enhance the evacuation efficiency of deeply buried subway stations, a standard subway station was selected to establish an elevator-assisted evacuation model for deeply buried subway stations. The average evacuation time of passengers was selected as the primary evaluation metric. Variation characteristics in evacuation efficiency were calculated and analyzed under the combined influence of various factors, including buried depth of the subway, passenger flow intensity, the proportion of passengers opting for elevator evacuation, elevator operating parameters, the number of elevators, and acceptable queue size through simulation. The results indicate that the advantages of elevator-assisted evacuation are more pronounced when the subway depth exceeds 30 m. When passengers maintain their original evacuation paths, the evacuation time is inversely related to the proportion of passengers choosing to use the elevator during off-peak periods, but positively related during peak hours. Furthermore, when passengers alter their evacuation paths due to queue size, evacuation efficiency improves under different buried depth scenarios. In a subway with a burial depth of 90 m and an acceptable queue size of 30, the overall evacuation efficiency reaches its peak. When planning subway exits, reasonably increasing the number of elevators and their rated load, as well as operating speed, can effectively balance evacuation efficiency with cost control.

Key words: influence of multiple factors, deeply buried subway station, elevator-assisted evacuation, evacuation efficiency, simulation

CLC Number:

X952

HE Shanshan, WANG Qiao, CHEN Juan, YOU Yong, WANG Jinwei, MA Jian. Elevator-assisted evacuation efficiency of deeply buried subway station under influence of multiple factors[J]. China Safety Science Journal, 2025, 35(3): 194-203.

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参数	数值设置
乘客期望速度/(m·s^-1)	均匀分布(0.8, 1.3)
乘客初始速度/(m·s^-1)	均匀分布(0.5, 1.8)
肩膀尺寸/m	三角分布(0.25, 0.39, 0.5)
上行楼梯速度/(m·s^-1)	速度因子:0.7
闸机排队等待时间/s	均匀分布(0.5, 2)

设施类型	通过能力/(人次·s^-1)
设施类型	本文仿真值	文献[18]	文献[19]	地铁设计规范
1m宽上行楼梯	0.88	0.95 (+7.4%)	0.91 (-3.3%)	1.03 (-14.6%)
1m宽自动扶梯	2.08	1.91 (-8.9%)	2.01 (+3.5%)	2.28 (-8.8%)
闸机	0.57	0.56 (+1.8%)	—	0.58 (-1.7%)