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The Application of Intelligent Emergency Response System for Urban Underground Space Disasters Based on 3D GIS, BIM and Internet of Things

With the development of Internet of Things, 3D GIS, BIM and other technologies, 3D GIS has been widely used in urban planning, urban design, public safety and urban engineering. At the same time, 3D GIS provides a reliable tool for disaster prevention and mitigation, emergency response and management, especially for emergency disposal in urban areas. Real-time environment and analysis tools provided by 3D GIS can realize disaster event recurrence, deduction and disaster management analysis, and provide effective strategic support for disaster reduction and emergency response. This paper mainly analyses the structure of urban disaster emergency response system, studies the urban logical structure and analysis the method based on network structure, extracts the most important factors and information in urban emergency management through the analysis of the complex structure inside the city, establishes the three-dimensional urban environment and urban network logical model by using 3D GIS technology, and simulates the process of urban emergency disposal. Meanwhile, the feasibility of the application of the system in the whole urban emergency management system is investigated through the construction of the urban emergency response system with community as the unit.