基于信息量模型法评价青阳县地质灾害易发性  

Evaluation of Geological Hazard Susceptibility in Qingyang County Based on Information Model Method

作　　者：李中权 LI Zhongquan(322 Geological Team of Anhui Provincial Bureau of Geology and Mineral Exploration)

机构地区：[1]安徽省地质矿产勘查局322地质队,安徽省马鞍山市243000

出　　处：《现代矿业》2022年第9期91-94,共4页Modern Mining

摘　　要：应用信息量模型法对青阳县进行地质灾害易发性评价。首先对数据源进行处理,选取地形地貌(坡度、地形起伏度)、地质环境(工程岩组、断层缓冲)、人类活动(道路缓冲)5个评价指标,应用层次分析法计算5个评价因子的权重,并应用ArcGIS平台将5类信息量评价图层与灾害点进行叠加分析,获取易发性指数。采用自然断点法对易发性指数进行重分类,将研究区分为高易发区、中易发区、低易发区、非易发区4类,为地质灾害风险和防治区划提供基础数据。Geological hazard susceptibility evaluation in Qingyang County was carried out using the information model method.Firstly,the data source is processed,and five evaluation indicators are select⁃ed,topography(slope and terrain relief),geological environment(engineering rock formation,fault buf⁃fer),and human activities(road buffer).The weights of the five evaluation factors were calculated by the AHP method,and the five types of information evaluation layers and the disaster points were superimposed and analyzed by the ArcGIS platform to obtain the susceptibility index.The natural breakpoint method was used to reclassify the susceptibility index,and the study area was divided into four categories:high-risk ar⁃ea,medium-prone area,low-risk area,and non-prone area,which provided basic data for geological di⁃saster risk zoning and prevention zoning.

关 键 词：信息量模型法 地质灾害 易发性评价 ARCGIS平台 层次分析法 

分 类 号：P694[天文地球—地质学]