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主管单位:中国地质调查局

主办单位:中国地质调查局西安地质调查中心
中国地质学会

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    基于多源时序InSAR技术的滑坡隐患早期识别

    林明明, 赵勇, 王坤, 张帆, 刘晓蕾, 李金鑫

    林明明,赵勇,王坤,等. 基于多源时序InSAR技术的滑坡隐患早期识别[J]. 西北地质,2024,57(6):268−277. doi: 10.12401/j.nwg.2024083
    引用本文: 林明明,赵勇,王坤,等. 基于多源时序InSAR技术的滑坡隐患早期识别[J]. 西北地质,2024,57(6):268−277. doi: 10.12401/j.nwg.2024083
    LIN Mingming,ZHAO Yong,WANG Kun,et al. Early Identification of Potential Dangers of Loess Landslide Based on Multi-Source and Time Series InSAR[J]. Northwestern Geology,2024,57(6):268−277. doi: 10.12401/j.nwg.2024083
    Citation: LIN Mingming,ZHAO Yong,WANG Kun,et al. Early Identification of Potential Dangers of Loess Landslide Based on Multi-Source and Time Series InSAR[J]. Northwestern Geology,2024,57(6):268−277. doi: 10.12401/j.nwg.2024083

    基于多源时序InSAR技术的滑坡隐患早期识别

    基金项目: 新疆维吾尔自治区自然资源厅项目“新疆昆仑山北坡莎车县-叶城县地质灾害重点区域精细化调查”(XJDZDC2019G-2-02)资助。
    详细信息
      作者简介:

      林明明(1984−),男,工程师,主要研究方向为地质灾害防治技术。E−mail:405482253@qq.com

    • 中图分类号: P642.22

    Early Identification of Potential Dangers of Loess Landslide Based on Multi-Source and Time Series InSAR

    • 摘要:

      中国山区滑坡灾害频发且分布广泛,尤其是地处高位的隐蔽型灾害及隐患,传统的技术对其识别监测效果较差。InSAR技术作为一种基于广域面范围的对地观测技术,可以快速获取地表大范围的微小缓慢形变,相对于点监测技术来说,具有先天的优势,在滑坡隐患识别工作中起到了重要的作用。笔者以新疆叶城为研究区,收集10景ALOS-2数据和98景Sentinel-1数据,基于SBAS-InSAR技术对滑坡地质灾害及隐患进行识别与监测。基于形变结果,结合光学遥感影像,建立遥感解译标准,共解译出22处有形变特征的滑坡隐患,进行了野外验证,确定滑坡隐患点20处,识别准确率达91%。基于形变特征和野外验证结果对两处典型隐患点的时间序列形变情况及形变原因进行了详细的分析。结果显示,两处滑坡整体呈现缓慢蠕变的状态,但遇降雨或融雪可能会发生加速变形。研究表明,多源InSAR技术可以有效的识别叶城地区的滑坡隐患,为后续的滑坡灾害防治提供了可靠的数据支撑。

      Abstract:

      Landslide disasters are frequent and widespread in mountainous areas of China, especially those potential disasters and dangers at high altitudes, where traditional technologies are less effective in identification and monitoring. Interferometric Synthetic Aperture Radar (InSAR) technology, as a ground observation technique based on a wide-area surface, can rapidly acquire minor and slow ground deformations over large areas, offering innate advantages over point monitoring techniques and playing a significant role in the identification of landslide risks. This study focuses on the Yecheng area of Xinjiang, utilizing 10 scenes of ALOS-2 data and 98 scenes of Sentinel-1 data. Based on the SBAS-InSAR method, identification and monitoring of geological hazards and potential landslide risks were conducted. By interpreting the deformation results in conjunction with optical remote sensing images, a remote sensing interpretation standard was established, revealing 22 potential landslide sites with deformation characteristics. Field verification confirmed 20 of these sites, achieving an identification accuracy rate of 91%. Detailed analysis of the time series deformation and causes at two typical risk sites based on deformation characteristics and field verification results showed a general trend of slow creep, with the potential for accelerated deformation in the event of rainfall or snowmelt. The results indicate that multi-source InSAR technology effectively identifies potential landslide risks in the Yecheng area, providing reliable data support for subsequent landslide disaster prevention and control measures.

    • 图  1   研究区地貌图

      Figure  1.   Geomorphologic map in study area

      图  2   研究区高程图

      Figure  2.   Topographic map in study area

      图  3   InSAR技术解译流程图

      Figure  3.   Interpretive flow charts of InSAR technology

      图  4   ALOS-2数据年平均形变速率

      Figure  4.   Deformation rate diagram of ALOS-2 data

      图  5   Sentinel-1数据年平均形变速率

      Figure  5.   Deformation rate diagram of Sentinel-1 data

      图  6   滑坡隐患分布图

      Figure  6.   Landslide hazard distribution map

      图  7   滑坡隐患形变图

      Figure  7.   deformation map of landslide potential danger

      图  8   典型滑坡隐患点形变图

      Figure  8.   Deformation map of typical landslide potential dangers

      图  9   特征点时间序列形变图

      Figure  9.   Time series deformation diagram of feature points

      表  1   ALOS-2和Sentinel-1数据基本参数表

      Table  1   Basic parameters table of ALOS-2 and Sentinel-1A data

      数据源 波段 轨道方向 入射角(°) 航向角(°) 分辨率(m) 影像数量(个)
      ALOS-2 L 升轨 33.4 −12.8 6 10
      Sentinel-1 C 升轨 39.7 −13.2 25 98
      下载: 导出CSV

      表  2   形变程度划分

      Table  2   Deformation level division

      类别年平均形变速率绝对值(mm/a)
      4~1010~2020~3030~50>50
      形变程度微小明显很明显极明显
      下载: 导出CSV

      表  3   滑坡隐患野外验证

      Table  3   Field verification table of landslide potential danger

      编号经度纬度规模位置是否在册点滑坡类型威胁对象
      H1E 76°42′56.424″N 36°58′57.201″小型2村黄土滑坡草场、河道
      H2E 76°39′4.603″N 36°57′8.427″中型2村黄土滑坡房屋、羊圈、牧道、草场
      H3E 76°32′0.010″N 37°1′43.857″小型2村黄土滑坡无威胁对象
      H4E 76°32′40.881″N 37°0′58.652″小型2村黄土滑坡草场、牧道
      H5E 76°33′47.075″N 37°9′3.708″中型4村黄土滑坡房屋、羊圈、草场、牧道
      H6E 76°33′38.630″N 37°0′3.964″小型2村黄土滑坡居民地、道路、草场
      H7E 76°34′29.319″N 37°3′57.313″小型3村黄土滑坡草场、林场、道路
      H8E 76°36′44.062″N 37°0′48.035″小型3村黄土滑坡房屋、草场、牧道、羊圈
      H9E 76°40′5.238″N 36°57′20.338″中型2村黄土滑坡居民地、牧道、草场
      H10E 76°41′23.271″N 36°58′31.672″中型2村黄土滑坡房屋、公路、草场、羊圈
      H11E 76°41′33.202″N 36°58′29.882″小型2村黄土滑坡牧道、草场
      H12E 76°41′35.577″N 36°58′38.621″小型2村黄土滑坡牧道、草场
      H13E 76°42′11.812″N 37°1′27.407″小型2村黄土滑坡牧道、草场、羊圈、房屋
      H14E 76°42′19.082″N 37°1′30.652小型3村黄土滑坡草场、羊圈
      H15E 76°42′45.054″N 36°58′44.400″小型2村黄土滑坡无威胁对象
      H16E 76°43′0.560″N 37°0′57.006″小型2村黄土滑坡草场、548县道、羊圈
      H17E 76°43′36.918″N 36°58′40.910″小型2村黄土滑坡草场、548县道
      H18E 76°43′47.959″N 37°1′27.517″小型3村黄土滑坡草场、林场、道路
      H19E 76°44′14.263″N 37°0′12.923″小型2村黄土滑坡草场、548县道
      H20E 76°44′31.332″N 37°0′16.100″小型2村黄土滑坡548县道、草场
      H21E 76°44′52.247″N 37°0′14.915″小型2村黄土滑坡羊圈、草场
      H22E 76°45′1.308″N 37°0′28.603″小型2村黄土滑坡草场、河道
      下载: 导出CSV
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    出版历程
    • 收稿日期:  2024-04-21
    • 修回日期:  2024-08-19
    • 录用日期:  2024-08-25
    • 网络出版日期:  2024-09-10
    • 刊出日期:  2024-12-19

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