基于本底因素贡献率模型的汶川县滑坡灾害危险性评价  

Hazard Assessment of Landslide Disaster in Wenchuan County Based on Root Factor Contributing Weight Model

作　　者：吴森[1] 吴彩燕[1] 李素敏[1] 罗晓旭[1] 

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621010

出　　处：《西南科技大学学报》2013年第3期28-34,共7页Journal of Southwest University of Science and Technology

基　　金："十二五"国家科技支撑计划项目(2011BAK12B01);科技部国际合作子项目(11zh0021)

摘　　要：通过对汶川县已发生的滑坡灾害数据进行分析,选取地层岩性、高程、地形起伏度、坡度、坡向、曲率6个因子作为滑坡灾害危险性评价因子,利用ArcGIS软件对各个因子进行统计分析和评价分级,利用贡献率权重叠加模型,建立了滑坡灾害危险性评价模型,最终得到汶川县滑坡灾害危险性等级区划图,并划分5个等级:极高危险区、高危险区、中危险区、低危险区、极低危险区。Based on the analysis of the landslide disasters occurred in Wenchuan county, the six factors of formation lithology, elevation, topographic relief, slope aspect, slope gradient, and curvature are selected as the landslide disaster hazard assessment factors. The ArcGIS software was adopted to analyze and grade the factors. The ＂contributing weight model＂ was then built to assess the hazard level of landslide in the area. Finally a zoning map of Wenchuan county ＇ s landslide disaster hazards was achieved, with the haz- ards being divided into five grades： very highly hazardous zone, highly hazardous zone, moderate hazard- ous zone, lowly hazardous zone and very lowly hazard zone.

关 键 词：滑坡 贡献率权重 危险性评价 汶川 

分 类 号：P315.9[天文地球—地震学] X43[天文地球—固体地球物理学]