摘要
以浏阳500kV线路工程沿线为研究区,收集和整理相关资料,地质灾害类型主要为滑坡,确定了坡高、坡度、坡向、坡形、距离水系距离5个具有代表性的影响因素作为评价因子。通过层次分析法,对各个评价因子赋予权重。运用ArcGIS10的表面分析、距离分析、重分类、加权叠加、重采样等工具,对各评价因子的多源遥感数据进行分析,获得研究区的地质灾害风险评价图。对研究区进行地质灾害风险评价,将此区域内的地质灾害风险等级划分为:低风险、中等风险、高风险、极高风险四类。
Taking the Liuyang 500 kV line project as the research area and collecting and sorting out relevant data,the geological disaster type is mainly landslide,and five representative influencing factors including slope height,slope degree,slope direction,slope shape and distance from water system are determined as evaluation factors.Through the analytic hierarchy process,each evaluation factor is given weight.The multi-source remote sensing data of each evaluation factor were analyzed with ArcGIS10 tools such as surface analysis,distance analysis,reclassification,weighted superposition and resample to obtain the geological hazard risk assessment map of the study area.Carry out risk assessment of geological hazards in the study area,and divide the risk level of geological hazards into four categories:low risk,medium risk,high risk and extremely high risk.
作者
王焕新
蒋成
刘新
WANG Huan-xin;JIANG Cheng;LIU Xin(Hunan Electric Power Engineering Consulting Co.Ltd,Changsha 410000;Unisplendour Software System Corporation Limited,Beijing 100084)
出处
《矿产勘查》
2019年第7期1692-1700,共9页
Mineral Exploration
基金
基于物联网技术的智能化输变电工程现场平台研究项目资助
关键词
线路工程
地质灾害
层次分析法
多源遥感数据
风险评价
line project
geological hazards
analytic hierarchy process
multi-source remote sensing data
risk assessment
