路桥膨胀土区域地表变形三维时序InSAR监测方法

InSAR monitoring method for surface deformation in expansive soil area of road and bridge

本文研究了InSAR技术在路桥膨胀土地区的变形监测方法,以获取地表变形规律和沉降值。实验结果表明,该方法可以通过分析差分干涉图来获得表面变形,获得的表面变形沉降值与实测实际沉降值的误差在+3~-3mm之间,因此监测结果更加准确。路桥膨胀土区域的地表变形具有一定的规律性,膨胀土的特性会导致该区域的地表形变。

This paper studies the InSAR deformation monitoring method in expansive soil area of road and bridge,to get surface deformation law and subsidence value.The experimental results show that the method can obtain the surface deformation by analyzing the differential interferogram,and the error between the obtained subsidence value of the surface deformation and the measured actual subsidence value is within+3~-3mm,so the monitoring results are more accurate.The surface deformation in the expansive soil area of road and bridge has certain regularity,and the characteristics of expansive soil cause the surface deformation in this area.