Distribution And Evaluation Of Geological Hazards In Fugu New-Town

Our country is one of the places where the geology hazard is serious in the world,it is influence on ecological environment and developing society that geology hazard brings. For the sake of accurate, objectively evaluate a geology disaster risk, the domestic and international scholar did a great deal of research and included how to carry on evaluation, a great deal of data to the geology disaster risk how to save among them, can see and turn and the chain of database connects an etc..This selected works is used AHP method, taken GIS as platform and distributed regulation and risk to carry on research and study to Fugu New-Twon geology hazards in the mansion valley.With the natural geological environment of Fu Gu New-Town hazards, the technical route, methods and working flow of local geographical hazard evaluation are formed, the steps is data acquisition→data analysis→building index system→decomposing computation unit→evaluation analysis→determination of result.The main researches are following:(1)Aim at the natural geology environment of studying the area, analyzed to study area to collapse, slip ascent, mudslide to develop a characteristic and distribute regulation in detail, adopt target analysis the method built up the 3 F evaluation index disaster points density, slope gradient, slope height, slope aspect, slope shape, vegetation and human engineering activities, which seven geological hazard factors as evaluation indexs.(2)Adopt layer analysis method make sure the layer relation of each factor, establishment matrix, and ask for help of MATLAB to make sure that each power weighs.(3)Well made use of the space of geography information system analysis function in the research, make use of the space of grid space data analysis function carried on an evaluation to new area geology disaster risk in the mansion valley and evaluated to is divided into etc. in the high risk area, Medium risk area and low risk area ,which high risk area is 51.58% of whole area ,Medium risk area is 32.69% of whole area, low risk area is 15.74% of whole area.