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Risk Evaluation of Geological Disasters in China on Set Pair Situation Analysis Method

GONG Shi-liang(Center for Land Subsidence of China Geological Survey, Shanghai 200072, China)  
The geological disasters gravely influence the sustainable development of economy and society, and the risk evaluation is important for disasters prevention and control.The paper expatiates on attributes and characteristics of geological disasters and introduces the actuality of geological disasters in China.Based on set pair situation analysis, the paper also analyzes the gestation process of geological disasters, determines the principles of risk evaluation subarea and standard of set pair analysis index as identity degree and discrepancy degree with oppose degree.So according to the index system, five risk zones of geological disasters are partitioned in China and set pair analysis connection mathematics expression of dissimilarity zone are established.This research may afford important technical support for forecast and alarm of geological disasters and its prevention and control.
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