Based On RS And GIS For Urban Disaster Risk Assessment Of Geological Research

Geological disaster risk is extremely mean the activities of geological disasters in the loss of the possibility of human destruction. It reflects the occurrence of possible geological disasters in the opportunity loss and the extent of damage is the natural attributes of geological disasters and comprehensive reflection of the socio-economic attributes.In this paper, Beibei District, Chongqing Municipality, according to geological disasters in the formation of the natural and human environment, the history and characteristics of geological disasters in the status quo, build a model of risk assessment of geological disasters. Application of ArcGIS spatial analysis function of the study area of risk assessment and zoning, according to the application of high-resolution RS images IDAIS the vulnerability of the study area and interpretation of the types of the study area of vulnerability assessment and zoning, and the actual situation of geological disasters in the analysis of the results of the evaluation test of reasonableness. The full text of the following six parts:1.the Introduction, the main topics of this article describes the background of the significance of the status quo at home and abroad and the major research studies and research methods.2.introduces the risk assessment of geological disasters in the relevant theoretical research. Including the concept of geological disasters, geological disasters, the concept of risk assessment, risk assessment of geological disasters in the basic steps to risk assessment of geological disasters in the content and type, and is currently used in domestic and international risk assessment of geological disasters in several aspects related to methodology.3.Beibei District, based on the GIS risk assessment of geological disasters. Introduced the overview of geological disasters in the study area: the study area location, history and development of geological disasters in the characteristics of the status quo. The study area to build a geological hazard evaluation and classification system and the application of ArcGIS layers to establish the various evaluation factors.Expert points todetermine the weights of evaluation factors, according to H = W₁X₁ + W₂X₂ +... ..+W_mX_m model in ArcGIS to achieve risk assessment (that is, attribute data of the integrated stack).4. is divided into the study area based on RS vulnerability assessment of geological hazards. Include the following: the City of geological disasters for disaster vulnerability analysis and physical property characteristics for the evaluation of the selected type disaster; Introduction of modern remote sensing technology; the study area and interpretation of land cover types of the study area of the RS image select and apply ERDAS IMAGINE 9. 1 software to interpret the type of the study area covered by the steps; the study area for construction of disaster vulnerability assessment of bodyanalytical model: V(u) =(?)E(d)_iF(s)_i Urban social vulnerability analysis for disaster.5. part of the study area for the comprehensive evaluation of the risk of geological hazards and risk zoning. Construction of a geological disaster risk assessment model R = 0.5×H×0.5×P, carried out the study area of geological disaster risk analysis and zoning, and the results are verified and discussed.6. the main conclusions.