The effect of recent longwall mining operations over a large area including roads and an industrial zone needed to be determined whereas conventional in situ monitoring had covered only discrete points and sections.

The extent and magnitude of mining-induced settlement that coincided with mining operations in different areas were determined by InSAR analysis of a time series of satellite images.

Highlights

• Longwall mining-induced settlement over a large area needed to be determined.

• InSAR analysis (SBAS) was performed on a time series of satellite images.

• The extent and magnitude of subsidence and uplift were determined for a neabry industrial zone, road and railway line.

• The pattern of movement coincided with the mining operations beneath.

• We validated against in situ monitoring by different contractor.