北京大学学报（自然科学版）2024，Vol.60Issue(2)：265-276,12.DOI:10.13209/j.0479-8023.2024.003
利用结合土地覆盖类型的自适应DS-InSAR方法监测矿区地表形变
Investigation of Ground Deformations in Mining Areas Using the Adaptive DS-InSAR Method Combined with Land Cover
摘要
Abstract
Traditional multi-temporal InSAR (MT-InSAR) technology commonly employs a global single threshold in selecting valid pixels. In mining areas where there are significant temporal and spatial decorrelation effects or where the deformation gradient is large in a short period, the issue of sparse measuring points and inadequate spatial sampling frequently arises, further causing the incomplete acquisition of ground subsidence information. Here, we take 22 scenes of ALOS-1 images covering the Datong mining area as an example and use the adaptive distributed scatterer InSAR combined with land cover (ADSI-CLC) method to measure the long term time series of ground deformations in this area. The results indicate that the spatial-temporal distribution pattern of the deformation measurements obtained by ADSI-CLC method is similar to that of the StaMPS-SBAS method, and has a good corre-lation with mining facilities on high-resolution optical remote sensing images. However, the ADSI-CLC method can significantly increase the number and spatial distribution density of measuring points, identifying approximately four times as many distributed scatterers (DS) points as the StaMPS-SBAS method in this study area. Specifically, the consistency between the two methods is high in areas with zero deformation or minor deformation. In regions with large deformation, the StaMPS-SBAS method cannot effectively obtain deformation measurements, while the ADSI-CLC method can derive deformation measurement results that are consistent with the funnel-shaped spatial distribu-tion characteristics caused by mining activities, because of the increased number of measuring points. These results indirectly verify the reliability and effectiveness of the ADSI-CLC method in the ground deformations monitoring of the mining areas. Overall, the ADSI-CLC method can provide more detailed temporal and spatial deformation information, and can be used to monitor and warn the surface stability in mining areas.关键词
ADSI-CLC方法/分布式散射体/矿区形变监测/大同矿区Key words
ADSI-CLC method/distributed scatterer/deformations monitoring of mining areas/Datong mining area引用本文复制引用
张志亮,曾琪明,杨立功..利用结合土地覆盖类型的自适应DS-InSAR方法监测矿区地表形变[J].北京大学学报（自然科学版）,2024,60(2):265-276,12.基金项目
国家重点研发计划(2017YFB0502703)资助 （2017YFB0502703）
