测绘通报 ›› 2023, Vol. 0 ›› Issue (11): 12-17.doi: 10.13474/j.cnki.11-2246.2023.0320

• 滑坡监测与分析研究 • 上一篇    下一篇

基于SBAS-InSAR的山体滑坡形变监测分析

杨春宇1, 文艺2, 潘星3, 袁德宝2   

  1. 1. 北京市矿产地质研究所, 北京 101500;
    2. 中国矿业大学(北京)地球科学与测绘工程学院, 北京 100083;
    3. 四川测绘地理信息局测绘技术服务中心, 四川 成都 610081
  • 收稿日期:2023-03-19 出版日期:2023-11-25 发布日期:2023-12-07
  • 作者简介:杨春宇(1984—),男,高级工程师,主要从事工程测量和地表形变监测方面的应用和研究工作。E-mail:596360272@qq.com

Monitoring and analysis of landslide deformation based on SBAS-InSAR

YANG Chunyu1, WEN Yi2, PAN Xing3, YUAN Debao2   

  1. 1. Beijing Institute of Mineral Resources and Geology, Beijing 101500, China;
    2. China University of Mining and Technology(Beijing), Beijing 100083, China;
    3. Surveying and Mapping Technology Service Center, Sichuan Bureau of Surveying, Mapping and Geoinformation, Chengdu 610081, China
  • Received:2023-03-19 Online:2023-11-25 Published:2023-12-07

摘要: 本文以2019年3月15日发生于山西省临汾市乡宁县枣岭乡的山体滑坡为研究对象,采用滑坡前后2018年7月5日至2019年6月30日(共30景)Sentinel-1A的SAR影像数据,利用SBAS-InSAR技术对滑坡形变进行监测,发现研究区形变速率为-52.03~33.77 mm/a,整体环境较为稳定;研究了长时序黄土塬的形变速率和累积形变量,并结合相关地质资料分析滑坡成因;采用标准差椭圆算法分析了滑坡所在的黄土塬地区地表形变的时空演变特征,结果表明标准差椭圆的重心向西北偏移,椭圆面积小幅减小,西北-东南方向形变加剧,东北-西南方向变形发展则相对缓和,方位角逆时针旋转,偏移约17.03°。

关键词: 枣岭乡3·15山体滑坡, SBAS-InSAR, 滑坡成因, 形变速率, 时空演变

Abstract: Taking the mountain landslide occurred in Zaoling township in Shanxi province on March 15, 2019 as the research object, using Sentinel-1A SAR image data from July 5, 2018 to June 30, 2019 (a total of 30 scenes) before and after the landslide, this papere monitors the deformation data of landslides with the support of SBAS-InSAR technology. The results show that the deformation range of the study area is -52.03 to 33.77 mm/a, and the overall environment is relatively stable. The deformation rate and cumulative deformation variables of the long-term loess plateau are analyzed. The causes of landslides are analyzed based on relevant geological data from the research area. Using the standard deviation ellipse algorithm, it analyzes the spatio-temporal evolution characteristics of surface deformation in the loess plateau area where the landslide is located. The results show that the center of gravity of the standard deviation ellipse shifts to the northwest, the elliptical area decreases slightly, the deformation intensifies in the northwest southeast direction, and the deformation development in the northeast southwest direction is relatively gentle. The azimuth angle rotates counterclockwise, and the displacement is about 17.03 °.

Key words: 3·15 landslide in Zaoling township, SBAS-InSAR, landslide genesis, deformation rate, spatio-temporal evolution

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