Research on the Identification and Monitoring of Geological Disaster in a Pipeline Project Based on Permanent Scatterer Interferometric Syn-thetic Aperture Radar(PS-InSAR)
[Purposes]This paper aims to obtain temporal deformation characteristics of a 500 kV line and its surrounding mining area in western Henan Province,and to identify hidden geological hazards caused by ground deformation and subsidence.[Methods]The 38 elevation orbit Sentinel1A satellite images covering a 500 kV line and its surrounding mining area in western Henan Province from January 2020 to July 2021 were used as data sources to monitor and analyze the ground deformation in this area by means of PS-INSAR which can effectively reduce the errors caused by temporal and spatial out-of-phase inter-ference and atmospheric effects,and improve the accuracy of ground deformation monitoring results.[Findings]The overall subsidence of the region was slow,and an obvious subsidence funnel was formed in the Berlin village-Wanghe village-Yuezhai village area,with a maximum deformation rate of-10.23mm/y.[Conclusions]Based on the analysis of the distribution of geological hazard points obtained from the field investigation,the slow subsidence occurred in this area under the action of multiple factors such as min-ing,rainfall and groundwater,and the overall shape variable continued to increase with the continuous development of this area.
PS-InSARgeological hazardidentification of monitoringSentinel-1A
NETL
NSTL
万方数据
