摘要
本文在兰州市皋兰县地质灾害调查的基础上,选取2项地质灾害发育因子、6项孕灾地质条件因子和2项诱发因子构建危险性评价指标体系,将单位面积受灾害威胁的人口和财产等社会属性作为易损性评价的因子,探索出适用于皋兰县地质灾害风险性评价的综合体系。运用层次分析与GIS几何统计法,结合现场调查定性分析,对全县地质灾害风险性进行评价和区划。结果表明:皋兰县地质灾害风险评价可分为高、中、低、极低4个等级,分别占全县面积的6.15%、2.71%、21.28%、69.86%,评价结果与实际情况相符,可为皋兰县地质灾害风险管控提供依据。
Based on the geological disasters detailed investigation in Gaolan County,Lanzhou City,2 hazards developing factors,6 environmental factors affecting and 2 hazard inducing factors were selected to construct the risk evaluation index system,population module and property module threatened by the disaster were included into the vulnerability evaluation index system,so that the risk evaluation index system was built for geological disasters in Gaolan County.Applying analytic hierarchy process and GIS statistics method,combined with the site risk assessment of geological disasters in County,the paper evaluated and zoned the whole county.The results showed that Gaolan County can be delineated into four risk zones,which are high risk,medium risk,low risk and very low risk,accounting for 6.15%,2.71%,21.28%and 69.86%of the total area respectively.The evaluation results were consistent with the practical situations,which could provide a basis for risk prevention in Gaolan County.
作者
刘晋文
代宝峰
LIU Jinwen;DAI Baofeng(Key Laboratory of Groundwater Engineering and Geothermal Resources of Gansu Province,Lanzhou 730050,Gansu,China;Geological Environment Monitoring Institute of Gansu Province,Lanzhou 730050,Gansu,China)
出处
《资源信息与工程》
2023年第2期64-68,73,共6页
Resource Information and Engineering
