Abstract:

In order to realize scientific siting of urban fire stations， rationally allocate fire emergency resources， improve fire rescue response speed， and reduce accidents and casualties， the model intersection method was proposed based on the maximizing coverage model and the minimizing facility point model. Firstly， taking Fengdong New City of Xi'an City as the research background， based on geospatial data such as fire risk points of interest （POI）， locations of existing fire stations， road networks and fire station layout planning principles， the model intersection point method was applied to optimize the layout of urban fire stations； then the nearest facility point model and service area model were introduced to test the applicability of the model intersection point method， and the POI coverage rate and regional area coverage rate of the new planning site were calculated. The study shows that： compared with the existing fire stations， the POI coverage rate is increased by 10.20% and the regional area coverage rate is increased by 12.43% by using the model intersection method to determine the fire stations. Based on the results of the practicality analysis， 11 new primary fire stations are needed in Fengdong New City after several iterations， and the POI coverage rate and regional area coverage rate can reach 97.66% and 84.80% respectively. Only considering the high-risk places in the study area， the optimized layout of fire stations can cover 98.4% of POI and 96.8% of the regional area within 4min response time.

Key words: model intersection method, fire station, layout regulation, point of interest （POI）, region area, coverage rate, ArcGIS