Abstract: In order to study the density and evacuation time of people detained in sudden fire accidents in highway tunnels, combined with the fire emergency response time and disposal requirements, the traffic wave propagation theory is introduced, and the traffic flow status, personnel composition, vehicle composition and other factors are considered. A calculation method of the density of people detained is proposed. With the personnel density, bus evacuation time and other parameters, a prediction model of the evacuation time of people is constructed, the evacuation time under different traffic flow conditions is analyzed, and the effectiveness of the model is verified through case calculation and numerical simulation. The results show that the calculation method of the density of people detained based on the traffic wave theory can accurately calculate the distribution of the density of people after the tunnel fire accident, which conforms to the non-uniform distribution characteristics in the real scene; The prediction model of evacuation time can quickly predict the time required for highway tunnel evacuation, and the prediction results are basically consistent with the simulation results.

Key words: highway tunnel, personnel density, evacuation time, traffic wave theory