Monitoring of dynamic settlement safety for buildings and roads based on PS-InSAR
In order to study the dynamic settlement of buildings and roads,interferometric synthetic aperture radar(InSAR)data from 20 Sentinel-1 satellites covering Huancui District,Weihai City are used.The persistent scatterer InSAR(PS-InSAR)technology is employed to extract surface settlement points of different structures in the region and dynamically monitor the settlement of buildings and roads in Huancui District.The results show that the height of buildings in Huancui District is positively correlated with settlement;the settlement of railways and highways decreases from north to south.In areas with less human interference and better geological conditions such as mountainous areas,settlement is minimal.Points in Huancui District with an annual settlement greater than 10 mm are mainly concentrated in the northern part of the region where alluvial and aeolian deposits accumulate,with a concentration in artificial engineering areas such as docks and construction zones.The main reason for significant settlement in the northern region is loose geological strata with high water content,making them susceptible to settlement.There is a relatively high amount of artificial engineering activities in the area,exerting pressure on the underlying soil layers and causing settlement.Analyzing InSAR data can effectively monitor widespread surface settlement,and provide support for subsidence governance and decision-making.
万方数据
维普
