摘要
滑坡灾害严重威胁着人们的生命财产安全,对滑坡开展监测工作对防灾减灾具有重要意义。获取覆盖木场古滑坡的58景Sentinel-1降轨数据,基于短基线子集干涉测量(small baseline subset interferometric synthetic aperture radar,SBAS-InSAR)技术对木场古滑坡进行形变监测,结合木场古滑坡的地质特征分析了滑坡时序变形趋势。结果表明:木场古滑坡体形变速率结果整体为负值,且中下部变形速率较大;监测期间次级滑坡H1、H2和H3区域变形最为严重,监测点在时间维度上的变形趋势基本一致,总体呈下滑趋势,表明木场古滑坡体处于持续发展阶段,尤其是次级滑坡H1、H2和H3发育尤为强烈;结合现场变形迹象验证了SBAS形变监测的准确性。研究成果促进了InSAR技术在滑坡中的应用,以期为滑坡防灾减灾工作提供科学依据。
Landslide disasters seriously threaten the safety of people’s lives and property.Monitoring landslides is of great significance for disaster prevention and mitigation.The down-orbit data of Sentinel-1 in 58 scenes covering the Muchang ancient landslide were obtained,and the deformation monitoring of the Muchang ancient landslide was carried out based on the small baseline subset interferometric synthetic aperture radar(SBAS-InSAR)technology.Combined with the geological characteristics of the Muchang ancient landslide,the time series deformation trend of the landslide was analyzed.The results show that the deformation rate of the ancient landslide in Muchang is negative as a whole,and the deformation rate is larger in the middle and lower parts.The deformation trend is basically the same,showing a downward trend in general,indicating that the Muchang ancient landslide body is in a continuous development stage,especially the secondary landslides H1,H2 and H3 are particularly developed.Combined with the on-site deformation signs,the accuracy of SBAS deformation monitoring was verified.The research results promote the application of InSAR technology in landslides,in order to provide a scientific basis for landslide disaster prevention and mitigation.
作者
张钟远
徐世光
邓明国
曾营
李超
晁江琴
ZHANG Zhong-yuan;XU Shi-guang;DENG Ming-guo;ZENG Ying;LI Chao;CHAO Jiang-qin(Faculty of Land Resources Engineering,Kunming University of Science and Technology,Kunming 650000,China;Chongqing Research Institute,Harbin Institute of Technology,Chongqing 400020,China;Yunnan Geology and Mineral Engineering Investigation Group Co.,Ltd.,Kunming 650000,China;School of Civil Engineering,Southwest Jiaotong University,Chengdu 610000,China;Qingdao Institute of Surveying and Mapping,Qingdao 266000,China;School of Geographical Sciences and Tourism,Zhaotong University,Zhaotong 657000,China)
出处
《科学技术与工程》
北大核心
2023年第4期1414-1423,共10页
Science Technology and Engineering
基金
云南省科技厅科技计划项目(202101BA070001-145)。
关键词
滑坡灾害
短基线子集干涉测量(SBAS-InSAR)技术
形变监测
landslide disaster
small baseline subset interferometric synthetic aperture radar(SBAS-InSAR)technology
deformation monitoring
