Vulnerability assessment of geological hazards based on geo-rough space and GIS

With geo-rough space theory and GIS technology, the study area is divided into regular grid cells, vulnerability assessment of geological hazards indexes system and vulnerability knowledge representation system and decision table in study area are designed. On this basis, specific algorithms for assessment indexes system optimization and weights confirmation are constructed. So that the vulnerability quantitative scores are calculated, and the vulnerability gradation is classified, that is, high vulnerability, medium vulnerability, low vulnerability and very low vulnerability four grades. To achieve visualization of assessment results, GIS is used to accomplish zoning mapping.