Assessment Of Geological Disaster Risk Weixi County Loma River Hydropower Reservoir

The risk of geological disasters in the geological disasters activity intensity andextent of the loss caused by the human, a comprehensive reflection of the naturalproperties of the geological disasters and socio-economic attributes. Geologicaldisaster risk assessment mainly includes three aspects of the geological hazardassessment, vulnerability assessment and risk assessment, we propose a riskassessment of geological disasters in areas of destination geological disasters in theoverall level of construction projects for the local Land and Resources Bureau,environmental protection, disaster prevention and mitigation, planning andmanagement projects provide a scientific basis. Try to disaster losses drop itsminimum. In this thesis, Loma WeiXi County River Station Reservoir Area for thestudy. The basis of data obtained through surveys, is determined by the expertise ofgeological disasters impact factor score, using AHP to determine the study area ofgeological disasters affect the weight factor, GIS spatial analysis, overlay, operationsand other functions, come to study geological disaster risk The evaluation results:(1) Summary of relevant literature and geological disasters obtained the status ofgeological disaster investigation, analysis of geological disaster control factors, thesurvey engineering geological conditions of the study area, access to physical,geographical and socio-economic conditions of the study area, topography,weatherconditions, geological structure and regional stability data collection, geologicaldisasters in the study area (mainly for the collapse, landslides, mudslides) status quoanalysis, considering the geological disaster control factors pave the way for thefollowing analysis section of the study area.(2)"http://ids.ceode.ac.cn/" download the study area remote sensing image,acquired remote sensing image pre-processing, precision correction, integration,mosaic, last INTERPERATION (collapse interpretationlandslide interpretation,mudslides interpreted) to extract the basic map. (3) This article focuses on the implementation technology of GIS-based riskassessment of geological disasters, and expounded the principles and methods of therange of the technology. Geological hazard evaluation factor hazard and vulnerabilityassessment factor "Order of the disaster factor extraction, using the analytic hierarchyprocess to quantify the factors and streamlined to determine the weight of each factor,the use of GIS software integrated all kinds of calculation methods, draw the thedangerous distribution and vulnerability distribution, risk management standards inAustralia and New Zealand (RISK management AS/NZS4360:1999) to drawhigh-risk areas, risk areas and low risk areas in the study area geological disaster riskprediction and evaluation found that the results of the evaluation not only fully reflectthe geological disaster risk distribution characteristics of the study area, and alsoproved the feasibility of the method, the superiority and rationality.