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基于GIS技术的乃东区斜坡类地质灾害易发性评价

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以西藏自治区乃东区为研究区域,通过AHP-信息量法对区内的孕灾地质条件进行了分析.研究选取工程地质岩组、距断层距离、人类工程活动、距水系距离、坡度、坡高、斜坡结构、植被8个评价因子,基于ArcGIS平台,对乃东区崩滑地质灾害的易发性进行了评价,并将评价结果划分为高易发、中易发、低易发和非易发四个等级.利用ROC曲线检验评价精度,结果显示良好.因此,可为乃东区斜坡地质灾害的防治工作提供科学依据.
Susceptibility Assessment of Slope Geological Hazards in Naidong District Based on GIS
Taking Naidong District of Tibet Autonomous Region as the study area,the geological conditions conducive to disasters in the region were analyzed by using the AHP-Information method.Eight evaluation factors were selected,including engineering geological rock formations,distance to faults,human engineering activities,distance to water systems,slope gradient,slope height,slope structure,and vegetation.Based on the ArcGIS platform,the susceptibility to landslides and collapses in Naidong District was evaluated,and the results were classified into four levels:high,medium,low,and non-susceptible.The evaluation accuracy was tested using the ROC curve,which showed good performance.This study provides a scientific basis for the prevention and control of slope-related geological disasters in Naidong District.

Naidong Districtgeological disastersusceptibility assessmentAHP-Information

丁思蒙、韩尚鹏、田仕雄、刘鑫

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中国建筑材料工业地质勘查中心河北总队,河北 保定 071000

乃东区 地质灾害 易发性评价 AHP-信息量

2024

防灾减灾学报
辽宁省地震局,吉林省地震局,黑龙江省地震局,中国灾害防御学会

防灾减灾学报

影响因子:0.127
ISSN:1674-8565
年,卷(期):2024.40(4)