The Disaster Patterns of Landslides and Avalanches Will Still Need to be Closely Identified and Monitored in the Future in the Three Gorges Reservoir Area
The Disaster Patterns of Landslides and Avalanches Will Still Need to be Closely Identified and Monitored in the Future in the Three Gorges Reservoir Area
The monitoring and early warning system for geological hazards in the Three Gorges Reservoir area has demonstrated significant effectiveness.However,given the increasing frequency of extreme climate and rainfall,the overall situation for disaster prevention and control remains challenging.In this context,the patterns of newly emerged landslide,avalanche,and accumulation reactivation over the past 20 years since the reservoir's impoundment continue to hold practical significance.This paper,through an analysis of relevant case studies in the Three Gorges Reservoir area,combining previous research and comparisons with cases from the Hunan-Hubei mountain region,the Sichuan Basin,and areas not influenced by reservoir waters,identifies several disaster patterns that warrant ongoing attention.These include potential bedding rock landslides in areas with unique geological structures and landforms,rock collapses above mined-out areas or cavities,soil-like landslide and avalanche in heavily weathered zones of red beds,salt dissolution rocks,and fractured bedrock,as well as the reactivation and destabilization of soil slope deposits.These findings provide valuable references for the early identification and monitoring of hidden hazards along the reservoir banks,and guidance for future planning.
关键词
三峡库区/潜在滑坡/采空区崩塌/类土质崩滑/滑坡复活/成灾模式
Key words
Three Gorges Reservoir area/potential landslide identification/avalanche above mining/soil-like landslide and avalanche/landslide reactivation/disaster patterns
维普
万方数据