ANALYSIS ON GEOLOGICAL DISASTERS OCCURRED IN THE RECONSTRUCTED SETTLEMENTS SPACE AFTER THE EARTHQUAKE IN BEICHUAN

Beichuan Qiang Autonomous County was the very seriously destroyed area during the 2008's earthquake,with all kinds of urban and rural buildings greatly damaged because of the earthquake.The region's settlement space has been rapidly reconstructed during the post-disaster reconstruction of three years.However,the natural environment is not yet stable,coupled with the frequency of extreme weather events in recent years,a number of potential threats gradually were exposed,causing a number of catastrophic events in the settlement space of reconstruction after the earthquake.Particularly,the geological disasters broke out in Beichuan after the 7.9flood disaster in 2013,causeing serious security threat to the settlement space of reconstruction.In this paper,the census data of disaster after the 7.9flood disaster in 2013 and land use data of Beichuan were selected to analyze and evaluate the characteristics of geological hazard of the settlement space in Beichuan based on GIS technology,the nearest neighbor method a