基于PS-InSAR技术的太原地面沉降监测研究

Study on ground subsidence monitoring based on PS-InSAR technique in Taiyuan City

近年来,太原市经济迅猛发展,高层建筑增多,地下水开采等因素存在,致使该地区地面沉降范围与程度逐渐扩大,危害居民的人身财产安全,有必要进行地面沉降监测研究。本文结合2013年6月到2016年6月间的37景COSMO-SkyMed SAR数据,采用永久性散射体差分干涉测量(PS-InSAR)技术对该区域进行地表沉降监测,结果显示该时间段内小店地区地面沉降最严重,最大沉降量达-152.7 mm,年沉降速率达50.901 mm/a。

In recent years,with the rapid economy development in Taiyuan,the increasing number of high-rise buildings and deepen the exploitation of groundwater year by year,the scope and extent of land subsidence had gradually expanded endangering the personal safety of residents. It was necessary to conduct ground settlement monitoring research. Based on the 37 scenes COSMO-SkyMed SAR data from June 2013 to June 2016,the permanent scatterer differential interferometry( PS-InSAR) technique was used to monitor the surface settlement in Taiyuan. The results showed that the ground subsidence was the most serious during the period compared with other areas in Xiaodian area,where the maximum settlement was up to-152. 7 mm,annual subsidence rate was 50. 901 mm/a.