The Study Of Geological Hazards On Distribution And Risk Assessment Based On Geographical Conditions Census

Geological disasters seriously threaten the lives and safety of people and property.But also affect the development of the social economy.As geological disasters in Jiangxi province,Years of continuous research on geological disasters,And achieved many results. However, with the development of the times, We should also be continuous in-depth understanding of Geological disasters. For now, society is in a transition period of rapid economic development,in order to fully grasp the information of Geographical conditions,the Government launched a census of Geographic conditions.In this paper,the Study is Geological Hazards of Yingtan City.Study is based on Data of Geographical Conditions Census, then analysis the spatial distribution of Geological Hazards,and appraisal Geological Hazards based on data analysis.In this paper,has completed the following work.(1) Production thematic maps of Geological Hazards,by data from professional sector,and determine the distribution of Geological Hazards by Fieldwork and Image interpretation.(2) Extract corresponding thematic elements based on data of DEM.(3) This paper analysis that spatial relations of Land cover,Geographic Conditions Elements and Geological Hazards based on combination Data of Geographical Conditions Census and Data of Geological Hazards by use the theory of GIS.(4) Find the shortest path to the hospital according to different requirements.(5) Select two types of evaluation factors,one is predisposing factors,the other is affected factor.Calculate the weights of each evaluation factors and build an analytical model by Analytic Hierarchy Process.Finally,produced the Geological Hazards risk assessment maps for the study area by GIS.This study found that the geological hazard evaluation results was coincide the point density distribution of geological disasters. The evaluation results has reflect the distribution of Geological Hazards in space,the results meet the precision and actual situation.In other words the evaluation system and evaluation factors used in this paper are reliable.In the end,this paper has put forward some opinions to disaster prevention and mitigation based on results.