Abstract:

Geological monitoring as an effective technique of disaster prevention, has engineering significance for the monitoring of landslide deformation. IBIS-L (Image by Interferometric Survey) is an integration of interferometric survey, SAR technology, and stepped frequency wave. It is widely used in the monitoring of ground surface micro-deformation, but less applied to landslide deformation monitoring and in lack of unified monitoring and data processing method. A landslide in southwestern China was taken as an example and was monitored using this method based on preliminary geological understandings of the landslide on the prototype. The approaches of monitoring process and data processing are described in emphasis, and the deformation behavior are analysed. Comparison between the monitoring result with numerical simulation result verifies the feasibility of this IBIS-L system.

Key words: landslide monitoring, interferometry, monitoring of terrain deformation, deformation behavior, Baishuihe landslide