关键词: 滑坡灾害, 形变监测, SBAS, D-InSAR, 白格滑坡

Abstract: China is a country with a lot of landslide hazards, and monitoring and early warning are the main means to reduce the harm of landslide disasters effectively. Differing from the traditional monitoring method, differential interferometric synthetic aperture radar (D-InSAR) technique has the advantage of detecting and penetrating earth surface in all weather conditions and in all time, large area and low cost. It can meet the needs of wide-area landslide moving early recognition and dynamic time-spatial monitoring. Taking six satellite images(ALOS-2 PALSAR-2) as the data sources, the SBAS-InSAR method was adopted for the pre-disaster deformation monitoring of Baige Landslide, therefore the average settlement rate graph and accumulative land subsidence graph were obtained. And finally the pre-disaster deformation trend of the Baige landslide was obtained, and the purpose of finding the change and monitoring the trend of the landslide was achieved. The settlement trend was consistent with the actual results, so the feasibility of the SBAS-InSAR technique for early identification and dynamic monitoring of the landslide was proved. It has a wide range of development and application prospects in wide area geological hazard monitoring.

Key words: landslide disaster, deformation monitoring, SBAS, D-InSAR, Baige Landslide