基于确定性系数的加权信息量法滑坡易发性评价--以贵州省兴义市为例  

Evaluation of landslide susceptibility by weighted information value method based on determination coefficient method:taking Xingyi City,Guizhou Province as an example

作　　者：王嵩 贺太红[1] 何旭东[1] 李军[1] WANG Song;HETaihong;HE Xudong;LI Jun(114ological Brigade of Guizhou Geological and Mineral Exploration and Development Bureau,Zunyi 563000,Guizhou,China)

机构地区：[1]贵州省地质矿产勘查开发局114地质大队,贵州遵义563000

出　　处：《资源信息与工程》2024年第5期106-111,共6页Resource Information and Engineering

摘　　要：本文以贵州省兴义市滑坡地质灾害为研究对象,通过皮尔逊相关系数(PCC)对评价因子进行相关性分析,选取了坡度、平面曲率、地貌类型、工程岩组、距构造距离、斜坡结构、距水系距离7个评价因子,以确定性系数法计算各因子权重值,构建加权信息量模型,并与单一信息量模型和确定性系数模型的评价结果作对比分析。结果表明:加权信息量模型在高易发区和极高易发区的滑坡数占比为89.14%,AUC值为0.798,分别大于信息量模型的88.24%、0.788和确定性系数模型的85.52%、0.787。加权信息量模型评价结果更合理,精度更高,优于单一信息量模型和确定性系数模型。In this paper,taking the landslide geological disasters in Xingyi City,Guizhou Province,as the research object,the correlation analysis of the evaluation factors was carried out by Pearson correlation coefficient(PCC).Seven evaluation factors are selected,including slope,planar curvature,geomorphological type,engineering rock formation,distance from structure,slope structure,and distance from water system.Calculate the weight values of each factor by determination coefficient method,construct a weighted information model,and make a comparative analysis with the evaluation results of single information model and determination coefficient model.The results show that the weighted information model accounts for 89.14%of landslides in high and extremely high susceptibility areas,with an AUC value of 0.798,which is higher than the 88.24%and 0.788 of the information model and 85.52%and 0.787 of the determination coefficient model.The evaluation results of the weighted information model are more reasonable and with higher accuracy than the single information model and the deterministic coefficient model.

关 键 词：滑坡 地质灾害 信息量法 确定性系数法 加权信息量法 易发性评价 

分 类 号：P642.22[天文地球—工程地质学]