Research on the Propagation of Earthquake Disaster Risk in Water Supply System

Based on the calculation results of the vulnerability and the risk entropy index of the water supply system, the connectivity and risk propagation path of the urban water supply system are analyzed. Through the analysis of the disasters affected by the urban water supply system and different water supply subsystems during the earthquake, the disaster risk propagation mode and mathematical model of the urban water supply system during the earthquake are established, so as to carry out the risk assessment of the urban water supply system. Taking Karamay as an example, the city with refined basic data is used as the application city of the risk propagation model proposed in this paper. Combined with the topological structure of the city’s water supply system, the path of earthquake disaster risk propagation in the water supply system and the vulnerability assessment index of the water supply subsystem are studied, and the vulnerability assessment index and risk entropy index of each subsystem of water source, reservoir, building, and pumping station are established.