Research on Safety Design Strategy of Evacuation Stairs in Deep Underground Station Based on Human Heart Rate and Ascending Evacuation Speed

Abstract

An effective evacuation staircase safety design strategy is an important measure to ensure the safe evacuation of personnel in deep underground stations, and its design is influenced by human heart rate (HR) and ascending evacuation speed. This study clarifies the relationship between the ascending evacuation speed and human HR in deep underground stations by simulating an emergency situation in a deep underground station and observing individuals evacuating via stairs. A mathematical model of the ascending evacuation speed and HR at different heights is then established. Through the identification and prediction of intelligent safety systems, a safety design strategy for the rest area of evacuation stairs in deep underground stations was proposed. Rest areas of the stairs allow people in a state of fatigue to pause their ascent, preventing tired people from causing congestion and affecting the evacuation of less-tired people. This improves the overall evacuation speed and ensures the safety of life and property.