Evaluation of Emergency Evacuation Capacity of Subway Station Based on M/G/c/c

摘要

In the case of an emergency, accurately assessment of evacuation capability is the key to safe and efficient evacuation. M/G/c/c represents a queuing model where customers' arrivals obey Poisson distribution, the service time obeys general distribution, the system has c service desks, and its capacity is c. It is suitable for the analysis of pedestrian walking process and the calculation of corresponding indicators in various spaces. The evacuation time, passenger flow density and facility bottleneck are chosen as evaluation indexes to analyze pedestrian walking characteristics and connection structure of station divergence nodes. Based on the M/G/c/c queuing model, a pedestrian divergence node probabilistic selection optimization model is constructed. Then, we use lingo software to solve the model. And Jianguomen Subway Station is used to verify its effectiveness.