Urban gas pipe network emergency guard point optimization site selection method

The invention discloses an optimized site selection method for emergency guard points of an urban gas pipe network, relates to the technical field of site selection of emergency guard points, and aims to optimize the shortest total arrival time of gas rescue, the shortest distance between the emergency guard points and an emergency hot spot area and the minimum number of the emergency guard points. An emergency guard point multi-objective optimization site selection method considering the rescue efficiency and the rescue cost is provided; the optimal point of the emergency guard point theory is taken as the center, alternative guard points with better construction conditions are screened out within a certain relaxation radius, and then adaptability evaluation and optimization are carried out on the alternative guard points, so that a practical and feasible emergency guard point site selection scheme is obtained. According to the invention, a multi-target particle swarm algorithm solving model based on the cro