In the modern world, an important and undoubtedly urgent task is the availability of shelters for natural and man-made disasters, the task is especially acute in the context of the increased use of weapons in the South of Russia in the past two years. This article describes various approaches to building models of shelter accessibility zones, emphasizes the importance of the information resource on which the location of shelters is presented, and determines the shortest path to this shelter. The study is devoted to the development and description of a model of a geographic information project for the availability of shelters using the QGIS geographic information system (GIS). QGIS GIS provides a wide range of opportunities to expand its functionality. Various modules were used to build the geoinformation project model: LatLon Tools was used to create point layers or create a database of points in.csv format, QNEAT3 - to build isochrons, QGIS Server and QGIS Web Client - to publish interactive maps, QuickMapServices - to load source map data). QGIS simulates shelter accessibility layers and shortest paths to access them using three methods: buffer zones, isochrons, distribution density maps. A comparative analysis of these methods was carried out, it was determined that it is advisable to use buffer zones and isochrons together to obtain a more effective solution. This model will serve as the basis for creating a GIS project that can be developed to the level of an intelligent information system.