Application Of InSar Technology In Subsidence Monitoring Along City Roads And Subways

Monitoring the security of the traffic facilities is an important aspect for the traffic safety.When traffic facilities are damaged,the traffic will be out of operation.And the security of the traffic facilities is largely influenced by the factors like geological conditions and human construction.Damages to the traffic facilities like the deformation of the roads and bridges,landslides can be prevented trough the monitoring of the security of the traffic facilities.However,a problem occurs when it comes to monitoring the security of the traffic facilities.Traditional methods like leveling and GPS measurements can only be applied for a certain objective in a small range.To detect the hidden danger to the traffic facilities,an overall,all-day and all-climate way of measurement is required.In SAR,which is a technology invented in early years and highly promoted in recent years,was widely applied to the measurements of the ground deformation.This paper displays an application to the monitoring of the subsidence of Shenzhen road network and part of Shenzhen metro.And a primary exploration to the feasibility of the monitoring of the road network and metro network.What are elaborated and explored in this paper are as follows:(1)A brief elaboration of the In SAR technology and its history of development,also its application to deformation monitoring.(2)Elaborates the principles of In SAR and PS-In SAR algorithm and their technological process.(3)Using the In SAR data and Shenzhen road network files to analyze the overall subsidence of Shenzhen's road network.And the discovery of some characteristics of the overall subsidence.(4)Subsidence analysis of several roads in western Shenzhen City.And the analysis of the factors which cause the subsidence.(5)Using the In SAR data to analyze the subsidence of parts of Shenzhen's metro ways.And the discovery of some characteristics of the subsidence of the ground above the metro ways(6)A summary for the application to the subsidence monitoring based on In SAR technology.Also,an outlook of further studies introduced with more data.