Abstract: Aiming at the problem of evacuation in chemical parks under emergency, this study is based on the network flow control theory. The concept of time window is used to conduct the problem of path conflict and channel obstruction in the process of evacuation, and the multiple sources model is established on the basis of Dijkstra algorithm. Focus on the algorithm and steps of the shortest path model for human evacuation. In addition, the model is verified with the example in a chemical park. The results indicate that the evacuation model and algorithm are feasible and effective, and can reliably shorten the time required for evacuation.

Key words: fire, chemical industrial park, evacuation route, evacuation model, multi-source evacuation