GROUND SUBSIDENCE ALONG SHANGHAI METRO LINE 6 BY PS-InSAR METHOD
With the rapid development of urban economy,convenient,safe,and efficient urban rail transit has become the preferred method for people to travel.In order to ensure the safety and sustainable development of urban rail transit,the PS-InSAR technology with millimeter deformation measurement accuracy has been widely applied to monitor the deformation of urban rail transit.In this paper,32 scenes of COSMO-SkyMed descending images and 23 scenes of Envisat ASAR images covering the Shanghai Metro Line 6 acquired from 2008 to 2010 are used to estimate the average deformation rate along line-of-sight(LOS)direction by PS-InSAR method.The experimental results show that there are two main subsidence areas along the Shanghai Metro Line 6,which are located between Wuzhou Avenue Station to Wulian Road Station and West Gaoke Road Station to Gaoqing Road Station.Between Wuzhou Avenue Station and Wulian Road Station,the maximum displacement rate in the vertical direction of COSMO-SkyMed images is-9.92 mm/year,and the maximum displacement rate in the vertical direction of Envisat ASAR images is-8.53 mm/year.From the West Gaoke Road Station to the Gaoqing Road Station,the maximum displacement rate in the vertical direction of COSMO-SkyMed images is-15.53 mm/year,and the maximum displacement rate in the vertical direction of Envisat ASAR images is-17.9 mm/year.The results show that the ground deformation rates obtained by two SAR platforms with different wavelengths,different sensors and different incident angles have good consistence with each other,and also that of spirit leveling.
Ground subsidence Shanghai Metro Line 6 PS-InSAR COSMO-SkyMed Envisat ASAR
Jicang Wu Minyan Liao Naiyi Li
College of Surveying and Geo-Informatics,Tongji University,Shanghai
国际会议
北京
英文
1889-1893
2018-05-07（万方平台首次上网日期，不代表论文的发表时间）