Based On AHP And Difference Weight Class Reunion Of Earthquake Disaster Evaluation Model Research

By gathering since the20th century magnitude7or more serious casualties and property losses of earthquake cases data of impact factor research in earthquake disaster loss characteristics, according to the features of impact factor, the extraction of rapid assessment of earthquake disasters space scatter clustering model. On this basis, put forward a kind of based on the scatter information combined with earthquake cases information of earthquake rapid assessment method. First of all, determine the magnitude, earthquake intensity, earthquake geology, building characteristics, original times type, climate, earthquake weather conditions, when the number of aftershocks, population density as the influence factors of earthquake disaster evaluation results. Included14large earthquakes above magnitude7earthquake quantify the impact factors of information processing, earthquake cases after a quantitative processing to data by correlation analysis and grey correlation method to get the impact factor correlation matrix. Secondly, in order to comprehensive earthquake disaster loss coefficient for the top, coefficient of casualties and property loss coefficient for the middle tier or layer criterion, seismogenic time, focal depth, epicentral intensity and magnitude, duration, number of aftershocks, building quality, secondary disasters, and population density of bottom coefficient and the influence factor of correlation matrix as a comparative judgment matrix, calculated the impact factor for comprehensive coefficient of earthquake disaster loss weight. Again, to extract the ya’an area of137villages and towns of location information, the information such as population density, building quality of spatial clustering, clustering weights according to the analytic hierarchy process (ahp) of weight information set, clustering threshold according to the seismic intensity zoning map in China says the Midwest intensity regression model to calculate the intensity of the ellipse and the length of the shaft refer to4.20forth information such as the location and magnitude of the earthquake fault zone. Point of nearest neighbor interpolation for the results of clustering and concludes that scatter the clustering result.the with actual earthquake intensity issued by the China seismological bureau do contrast figure, space scatter graph clustering effect more close to the actual intensity, possesses the advantages of fast speed, but in the area set up and the magistoseismic area accuracy needs to be improved.