Formation Mechanism and Prevention Mechanism of Urban Emergencies

With the development of modernization and urbanization, the economic and productive activities of people in cities continue to expand, and cities are playing a greater role in people's lives. At the same time, bad factors in cities are born, resulting in urban emergencies becoming more and more frequent. Therefore, the prevention and management of urban emergencies become more and more important. This paper firstly analyzes the inducing factors of urban emergencies, and interprets the main inducing factors of urban emergencies from three levels. Secondly, social combustion theory and system dynamics theory are used to construct the formation mechanism of emergencies, and the main mechanism of urban emergencies is analyzed from the three perspectives of "combustion substance", "combustion promoter" and "ignition temperature". The feedback loop of organization management, public satisfaction and public opinion is obtained from the cause-and-effect diagram. Thus, it qualitatively describes the formation of urban emergencies. Finally, this paper puts forward prevention strategies for urban emergencies from three aspects: reducing internal and external contradictions, strengthening public opinion supervision and science popularization education ability, and enhancing the establishment of risk assessment mechanism. It provides a way to maintain the security and stability of the city.