Research on application of temporal InSAR technology in reservoir inspection
In view of the characteristics of InSAR deformation monitoring in low lost and large-scale survey,Sentinel-1A image data is used to monitor the temporal InSAR deformation of a reservoir in Luoyang City at the initial stage of filling.After deformation monitoring,the study area is divided into 4 hidden landslide areas and 4 urban suspected subsidence areas.The remote sensing survey and key monitoring method is adopted to conduct dam deformation analysis,survey of areas with high incidence of geological disasters,and urban surface deformation monitoring in the reservoir area.Finally,the overall assessment of reservoir project impact on urban geological disturbance is formed.The results show that there is a significant deformation in the central part of dam during 2020 to 2021,and the maximum cumulative deformation in 2 years is 54.1 mm.The deformation values on both sides of dam are distributed symmetrically,which is consistent with the stress characteristics of water-facing pressure.The disturbance caused by water conservancy project construction to surrounding towns is almost negligible,and the overall state within the survey area is stable.Based on time series InSAR technology,non-contact monitoring of surface deformation provides a new technical solution for reservoir inspection and early warning mechanism.
万方数据
维普
