中国地质灾害与防治学报2023，Vol.34Issue(6)：57-68,12.DOI:10.16031/j.cnki.issn.1003-8035.202211045
基于多源遥感数据的高位滑坡特征分析
Analysis of high-position landslide characteristics based on multi-source remote sensing data:A case study of the Yanwo Village landslide in Rongshan Town,Lizhou District,Guangyuan City
摘要
Abstract
On October 6,2021,a high-position landslide disaster occurred in Yanwo Village,Rongshan Town,Lizhou District,Guangyuan City,Sichuan Province,around 13:00.The landslide resulted in the destruction of 4 houses,3 power lines,the burial of a 170-meter-long rural road,and the blockage of a 350-meter-long river channel.By utilizing a variety of remote sensing information sources,including multi-period satellite data before and after landslide,high-precision UAV aerial images,and airborne LiDAR data,the characteristics of high landslide and its sliding mode are studied by using a four-dimensional analysis approach combining three-dimensional space with time.Starting from the development background of high landslide,the deformation and failure characteristics and sliding mode of high landslide are summarized by analyzing the deformation characteristics before sliding and the dynamic procession of the high landslide.Based on the deduced landslide progression and the stability evaluation of the residual landslide at the rear,three sliding modes for future high-position landslide events are predicted and analyzed:Firstly,the back edge of landslide continues to be disjointed and move,causing a direct shear failure of the front part of the landslide by squeezing.Secondly,the trailing edge of the landslide continues to be disjointed and move,resulting in the sliding landslide occurs along the existing landslide channel.Thirdly,the initiation of the front part of the landslide trigger a tractional landslide in the middle and rear parts of the landslide.High-position landslides are common in the southwest mountainous areas,and during early geological hazard investigations,they should be effectively identified,and disaster prevention and mitigation measures should be strengthened.关键词
多源遥感/高位滑坡/变形特征/破坏特征/滑动模式Key words
multi-source remote sensing/high-position landslide/deformation characteristics/failure characteristics/sliding mode分类
天文与地球科学引用本文复制引用
王猛,何德伟,贾志宏,胡至华..基于多源遥感数据的高位滑坡特征分析[J].中国地质灾害与防治学报,2023,34(6):57-68,12.基金项目
中国华电集团有限公司科研项目(JS-LW-FW/ZX-084 （）
JS-YBT-FW/YF-2022-30) （）
成都市地质环境监测站委托项目(2068-2340ZHBC-1621) （2068-2340ZHBC-1621）
