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    InSAR技术在滑坡识别与监测中应用的研究进展

    Research progresses of InSAR technology application on landslide identification and monitoring

    • 摘要:
      研究目的 滑坡灾害是威胁山区重大工程建设与人类生命财产安全的主要地质灾害类型,滑坡灾害早期识别与监测预警已成为有效防范灾害风险的重要途径。
      研究方法 根据文献资料,本文介绍了InSAR技术的基本原理及其发展历程,梳理了InSAR技术在滑坡灾害识别与监测中的应用研究现状。
      研究结果 滑坡InSAR识别主要包括区域性滑坡识别、重点区段滑坡识别和单体滑坡精准识别;滑坡InSAR监测主要针对具有重大险情的大型单体滑坡,着重阐述了监测方法选取和预警模型方面的研究进展。在此基础上,指出了当前InSAR技术在滑坡识别与监测研究中面临的主要挑战:复杂地形条件下侧视成像几何畸变挑战、滑坡大梯度形变探测挑战、大气延迟及植被穿透的挑战等。InSAR技术在滑坡应用中还存在着大范围监测能力不足、处理流程自动化程度较低、数据分析与挖掘程度不够等问题。
      结论 对InSAR技术未来在滑坡识别与监测中的发展方向进行了展望。伴随着未来InSAR技术应用水平的不断提升,将使滑坡灾害风险防范水平提升至新的高度。

       

      Abstract:
      This paper is the result of geological survey engineering.
      Objective Landslides pose a significant risk to major constructions and human safety in mountainous areas, and the early identification and monitoring of landslide has become an important way to prevent risk.
      Methods This paper briefly introduces the basic principle of InSAR technology and its development history, and introduces the current research status of its application in landslide identification and monitoring.
      Results The three types of landslide InSAR identification are regional, key sections and single landslide. InSAR monitoring of landslides mainly focuses on large landslides with significant risk, and highlights the research progress in monitoring method and early warning modeling. On this basis, the main challenges faced by InSAR technology in landslide identification and monitoring research at this stage are pointed out, including: the challenge of geometrical distortion in side−view imaging under complex terrain conditions, detecting large gradient deformation of landslides, atmospheric delays and vegetation penetration, etc. InSAR technology in landslide application still exists problems such as insufficient capacity of large−scale monitoring, low degree of automation of processing process, and insufficient degree of data analysis and mining.
      Conclusions Accordingly, the future development direction of InSAR technology in landslide identification and monitoring is prospected. With the continuous improvement of the application level of InSAR technology, it will effectively promote the new leap in landslide disaster risk prevention.

       

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