STUDY OF SUITABILITY ZONING BASED ON THE BASIC METHOD AND TECHNOLOGY OF GIS

This paper, based on the basic theory of urban engineering geological zoning and the basic method and technology of GIS, lays emphasis on discussing the methods of urban engineering geological mapping and zoning. Based on the demand of urban engineering mapping, it talks about a physical composition method of multi-source and multi-size spatial information, such as bed rock and remote sensing, and uses the result to make research of regional engineering geological environment, geological character and geological disaster. And then, it prefers a quantitative method of urban engineering geological zoning, called suitability zoning of fuzzy comprehensive assessment. It sets up a mathematical model of evaluation by selection four essential factors, and gives weight for every factor by expert. It makes a case study by the method of suitability zoning of fuzzy comprehensive assessment.