重庆市奉节县地质灾害风险评价和防灾减灾措施.pdf

两南大学硕卜’≯何论文巾文摘要险性评价(即属性数据的综合叠加)。易损性评价中,选取生命损失模数、人均收入、区域重要性等级和基础设施密度作为参评冈子,以乡镇行政单元作为基本评价单元,用层次分析法确定权重,根据P=VIYl+V2Y2+?+V。Y。模型在ArcGIS中实现易损性评价。在此基础上,结合危险性和易损性评价的结果,通过R=×Ⅳ+×P模型实现奉:伟县风险评价,并且与实际灾害分布进行对比检验,证明了评价模型的合理性。第五部分为奉:1了县地质灾害防灾减灾。提出了防灾减灾基本原则和相应的防火减灾措施。第八部分为结论和讨论。概述了本文的研究结论并提出了本研究中存在的问题和不足。关键词:地质灾害危险性评价易损性评价风险评价奉节县两南大。、产硕十。?≯伊论文AbstracIssessmentaboutGeoIogicaldisastersandhazardpreVention1●J●J●p1广1T●ancImltlgatlonmeaSUreS0I■engJIeinChongQingPostgraduateofmajoronPhysicalGeography:HaiXiangSuperVisor:,prehensivereflectionofnaturaIattributesandthesocio——sticsofge0109icaldisastersfomlingge0109icaldisastersinFengJieCounty,constructsageologicaldisastersmodelabouttheriskassessment,ArcGISspatialanalysisfhnctionisusedinFengJieCounty‘sgeologicaldisasterriskeValuationresults,:Theflrstpan:,thestatusquoindomesticand￡::thenaturalenVironment(geo伊印hical10cation,lithology,topo铲aphy,climate,hydr0109y,hydrogeology,humanactiVities,etc.)andsocjo—economicenvironment(agriculture,indust叫,transpolrt,financialserVices,etc.).Subsequently:,thecollapse,Mud—rockflowandgroundsubsidence’sdisastersoVerView,distributioncharacteristics,:The—,itconstlllctsthenskassessmentmodel,lncludlnghazardassessment,prehensiVe订skassessment·Hazardassessmentselectthedisasterpointsdensity,thescaleofdlsaster,,伊adien