Evaluation of evacuation difficulty of urban resident during storm water-logging based on walking experiment

This project studied evacuation difficulty for residents in the Daoli District of Harbin during storm water-logging. Frequent water-logging disasters in cities are serious threats to urban residents. When a water-logging disaster occurs, it is essential for residents to evacuate, taking refuge to reduce losses and to ensure safety. Starting from external factors and internal factors influencing resident evacuation, the study screened indicators for assessing the difficulty of evacuation during urban rainstorm water-logging, constructed an evaluation index system and evaluation models to assess the difficulty of evacuation of residents.

Results showed that residents in the vicinity of the three streets, Xinyang Road and Minqing Street, Zhaolin Street and Anfeng Street in the study area have difficulty in evacuation in the case of a 5-year torrential rain disaster. Other areas had little impact. In a 100-year torrential rain situation, it is more difficult for residents in Stone Road Bridge, the intersection of Market Street and Toulong Street, the intersection of Touloing Street and Zhaolin Street, the intersection of Anfa Street and JingweiErdao Street, and Anguo Street, while other areas were not seriously affected. The research results can provide new ideas for the study of evacuation of residents during urban water-logging, and can also provide decision-making basis for disaster prevention and mitigation for urban emergency departments.