Monitoring ground subsidence in mining area using spaceborne InSAR technology

A case study of INSAR application to monitor the ground subsidence of colliery area in Fengfeng coal mining area, Hebei Province, China is investigated in this paper. Using the data of ENVISAT ASAR and JERS SAR, the interferometric results of this area are derived. At the same time as acquisition of ENVISAT ASAR data, field leveling measurement in this area was carried out, and the historical excavation data were collected as well. A synthetic comparison is done between the results of D-InSAR and leveling measurement. The comparison shows that the D-InSAR subsidence results are consistent with the field measurement results and the historical excavation data. Finally, some ideas and suggestions about InSAR applications to deformation monitoring in mining areas and mining industrial cities are given based on this case study and other applications.