Author(s): YE Shengsheng, XIE Mowen, CHEN Youhua
Pages: 776-780
Year: 2016 Issue:  5
Journal: Resources Environment & Engineering
Keyword:  three-pass method; landslide deformation; spatial and temporal continuity; wide-area landslide; recognition of deformation; site review;
Abstract: The authors introduce principle of surface deformation measurement technique and the data processing flow of three-pass D-InSAR technology,and put forward a wide-area landslide deformation recognition technology based on the feature of spatial and temporal continuity of landslide deformation. Taking the Wudongde dam-reservoir as an example,it had compared and analyzed the landslide deformation distribution area and the site geological survey results acquired from the D-InSAR technique,the deformation of landslide and the actual monitoring results of deformation. The analysis results indicate that in the area of sparse vegetation,the landslide deformation range acquired from D-InSAR is agreed to the ac-tual survey,but the deformation varies considerably. So that the D-InSAR technology can be used to identify the wide-ar-ea landslide deformation within a certain range,which can provide an important reference on rapid and targeted field geol-ogy survey and the stability evaluation of landslide.