GBInSAR河流滑坡变形监测应用

Application of River Landslide Deformation Monitoring Based on GBInSAR

对城市中河流滑坡进行变形监测与分析掌握滑坡体形变规律,是滑坡安全性评估的重要手段。针对南宁邕江柳沙半岛滑坡灾后加固过程中稳定性,采用GBInSAR技术对该滑坡进行连续高精度变形监测,同时结合时间序列分析方法获取了该滑坡体的二维形变时间序列图以及特征点的形变时间序列。变形监测与分析结果表明,滑坡体上的加固带处已基本稳定,加固带上大部分PS点的形变在1 mm以内;滑坡体的大部分区域的形变基本在4 mm以内,且形变呈明显的非线性变化;GBInSAR技术可以快速、有效地获取河流滑坡整体形变信息及形变的演化过程。

Monitoring and analyzing the deformation of the river landslide in city to master the deformation law of landslide are important means of landslide safety assessment. In this paper, aiming at the stability of the Liusha Peninsula landslide during its strengthening process after the landslide disaster,we used GBInSAR technique to carry out the continuous and high precision deformation monitoring of the landslide. Meanwhile, we used the time series analysis method to retrieve the 2D deformation time series pictures of the landslide body and the deformation time series of the feature points. The deformation monitoring and analysis results show that the reinforcement belt on the landslide body is basically stable, and the deformations of most PS points on the reinforcement belt are within 1 mm. The deformations of most areas on the landslide body are basically within 4 mm, and the deformation presents obvious nonlinear changes. GBInSAR technique can quickly and effectively obtain the entire deformation information of the river landslide and the evolution process of deformation.