Dynamic Adjustment of Railway Emergency Plan Based on Utility Risk Entropy

Raising the speed of high-speed railway train provides great convenience for people to travel, but once an emergency occurs, the consequences are incalculable. Because of the uncertainties in the development process of railway emergencies, emergency decision-making often needs to be adjusted according to the changes of the state of the incident, that is, dynamic adjustment. Aiming at the dynamic adjustment of railway emergency plan, the emergency decision-making process is divided into several stages according to the key nodes. At each stage, the perceived utility value under the combination of the corresponding scheme and the scenario is obtained, and the utility risk function is derived by combining the utility value with its occurrence probability. Considering the utility risk under different situations of the same scheme, the utility risk entropy of the emergency response scheme is obtained, and the best scheme at the current moment is selected. Finally, an example is given to verify the effectiveness of the proposed method.