Joint application of DInSAR and ground measurements: A case study on dump stability analysis

摘要

In mining areas, wastes are usually piled-up in the dump, making a man-made hill with height of more than tens of meters. Because of the loose structure of dump sites, landslides or debris flow may occur after heavy rainfall, threatening local people's lives and properties. Therefore, dump stability monitoring and early warning for possible hazards is crucial for ensuring local safety. In this paper, a collaborative stability analysis with high-resolution SAR data and ground measurements is conducted over Xudonggou dump of Anqian iron mine. A two-pass DInSAR analysis is carried out to derive the deformation distribution over the whole area. High-precision GPS and robotic measurements on several points are also conducted over the dump site. Based on the measurements, an slope stability analysis is carried out and eventually a landslide hazard zone is outlined.