SBAS技术在地面沉降监测中的应用——以武汉市为例

Application of SBAS Technology in Ground Settlement Monitoring——Taking Wuhan City as an Example

随着地下资源的大量开采及各种工程建筑的建设,地面沉降现象已成为当前城市需要面对的主要地质灾害之一。InSAR技术在地面沉降监测方面具有高效率、全天候和不受天气影响的优势,D-InSAR及时间序列InSAR技术已广泛应用于地面沉降领域。本文采用2017-03-19至2017-07-29期间11景Sentinel-1A数据,利用SBAS-InSAR方法反演了武汉市青山区区域的形变时间序列和沉降速率图,并结合D-InSAR方法获取的形变结果,验证了该方法的可靠性与优越性。

With the massive exploitation of underground resources and the construction of various engineering buildings, the phenomenon of land subsidence has become one of the major geological disasters that the city needs to face. In SAR technology has the advantages of high efficiency,all-weather and weather-proof in land subsidence monitoring. D-InSAR and time-series In SAR technology have been widely used in the field of land subsidence. In this paper,the Sentinel-1 A data of 11 scenes during 2017-03-19—2017-07-29 was used,and the deformation time series and settlement rate map in the Qingshan District of Wuhan City were inferred by SBASIn SAR method. Combined with the deformation results obtained by the D-InSAR method,it is verified that the analysis results have certain reliability and superiority.