文章摘要
段顺荣,李延福,李春阳.基于GIS和层次分析法的青海甘德县地质灾害危险性评价[J].矿产勘查,2021,12(2):453-460
基于GIS和层次分析法的青海甘德县地质灾害危险性评价
Geological hazard risk assessment based on GIS and analytical hierarchy process in Gande County, Qinghai Province
投稿时间:2020-07-07  
DOI:
中文关键词: 地质调查工程  地质灾害  危险性评价  层次分析  黄河流域  青藏高原  甘德县  青海省
英文关键词: geological survey engineering, geological hazards, risk assessment, analytical hierarchy process,Yellow River watershed,Qinghai-Tibet Plateau,Gande,Qinghai Province
基金项目:青海省“高端创新人才千人计划”(编号:青人才字[2016]32号)和祁连山国家公园青海研究中心开放课题(编号:GKQ2019-1)联合资助。
作者单位
段顺荣 青海省核工业地质局,青海 西宁 810000 
李延福 青海省有色第三地质勘查院,青海 西宁 810000 
李春阳 青海省水文地质工程地质环境地质调查院,青海 西宁 810000 
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中文摘要:
      该文选取了灾害点密度、工程活动、降雨条件、威胁财产和威胁人数等13项因素,以青海甘德县315个地质灾害点作为样本数据,建立多层次评价指标体系的地质灾害危险性评价指标体系,采用层次分析法赋权法计算评价指标权重,基于GIS平台采用多因素综合法计算了甘德县地质灾害危险性并分区。结果表明:甘德县地质灾害主要以低危险性为主,占有总面积的49.2%;中危险区占总面积的24.7%;高危险区占有总面积的26.1%。高危险区主要分布于交通道路沿线和黄河干流左岸等人类居住集中区,因此,需因地制宜地制定防治方案。本文基于层次分析法的地质灾害危险性评价体系适用性较好,对类似的青藏高原地区的地质灾害危险性评价具有一定参考意义。
英文摘要:
      This article selects the disaster density, engineering activity, rainfall condition, property and the threat that the number 13 factors, such as to gander county 315 geological hazard points as sample data, establishing multi-level evaluation index system of geological hazard risk evaluation index system, evaluation index weight is obtained by using the analytic hierarchy process (ahp) empowerment method, based on the GIS platform using multi-factor synthetic method to calculate the gander county geological disaster risk and the partition. The results show that the geological hazards in Gande county are mainly low risk, accounting for 49.2% of the total area. The medium-risk area accounts for 24.7% of the total area; High risk areas accounted for 26.1% of the total area. High risk areas are mainly located along traffic roads and the left bank of the Yellow River, where human habitation is concentrated. Therefore, prevention and control schemes should be formulated according to local conditions. The assessment system of geological hazard risk based on analytic hierarchy process (AHP) in this paper has good applicability and has certain guiding significance for similar assessment of geological hazard risk in Qinghai-Tibet Plateau region.
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