地质与勘探2024，Vol.60Issue(6)：1205-1216,12.DOI:10.12134/j.dzykt.2024.06.010
基于不同数学模型的四川省马边县地质灾害易发性评价研究
Comparison of Different Mathematical Models for Geological Hazards Susceptibility Assessment in Mabian County,Sichuan Province
摘要
Abstract
This work attempts to reasonably and accurately reflect the geological hazard susceptibility of Mabian County in Sichuan Province.Taken the 301 geological hazards in Mabian County as examples,nine evaluation indices,including elevation,slope gradient,slope direction,slope type,topographic relief,engineering rock group,faults,rainfall,were selected.Based on the ArcGIS platform,four models,i.e.,the information model(I),deterministic coefficient model(CF),the analytic hierarchy process-information model(AHP-I)and the analytic hierarchy process-deterministic coefficient model(AHP-CF),were utilized to evaluate the susceptibility of geological hazards in the study area.The results show that slope gradient,engineered rock group,faults and rainfall have a high contribution to susceptibility of geological hazards in the study area.The four evaluation models classify the study area into low-prone,lower-prone,medium-prone,and high-prone areas.The medium-high prone zones are mainly distributed in the central and northern parts of the county,and in the area along the weak rock groups,rivers and faults,which are in high agreement with the distribution of historical hazard sites.Through ROC curve verification,the correct rates were all greater than 0.75,indicating that the evaluation results are highly accurate,and the accuracy of the four models is ranked as AHP-CF＞CF＞AHP-I＞I.This study can provide a theoretical method for evaluating the susceptibility of geologic hazards in Mabian County and provide a reference basis for the planning of geologic hazards prevention and control areas.关键词
地质灾害/易发性评价/层次分析法/信息量/确定系数/马边县/四川省Key words
geohazard/susceptibility evaluation/AHP/information volume/determination coefficient/Mabian County/Sichuan Province分类
资源环境引用本文复制引用
李彩侠,马煜..基于不同数学模型的四川省马边县地质灾害易发性评价研究[J].地质与勘探,2024,60(6):1205-1216,12.基金项目
桥梁无损检测与工程计算四川省高校重点实验室(编号:2023QYY06)、乐山市科技局重点项目(编号:21SZD070、21SZD071)和成都理工大学工程技术学院基金项目(编号:C122023015、C122024016)联合资助. （编号:2023QYY06）
