基于GIS的避难场所选址

Planning emergency shelters and site selection often rely on qualitative experience judgment, rather than quantitative calculation. With the aid of the geographic information system technology, it realizes the combination of quantitative analysis and the qualitative analysis. In the planning process, with the aid of geographic information system software, factors are made into raster maps, influence degrees of each factor are calculated in a certain county, and raster maps of variables of factors are generated. Then, the maps are on the basis of comprehensive analysis by weight. After that, sites of shelters are got. The method is application of the county with a choice of influence factors of terrain, Oil and gas station, medical institution and fire station. The results show that the location results are basically consistent with the county refuge existed.