Integrative Landslide Emergency Monitoring Scheme Based on GB-INSAR Interferometry, Terrestrial Laser Scanning and UAV Photography

Abstract

Abstract In this study, an integrated remote sensing scheme comprised of a Ground-based Interferometric Synthetic Aperture Radar (GB-InSAR), Terrestrial Laser Scanning (TLS) and an Unmanned Aerial Vehicle (UAV) is utilized for rockslide emergency monitoring. GB-InSAR, here proposed as surface deformation monitoring of residual dangerous rock mass, provides data support and decision basis for the study of secondary slope instability. TLS grasps the landslide body as point cloud, and the 3D modelling of the main hidden danger area of secondary sliding at the site. UAV obtained timely geographic information about disasters, investigated potential hazards and shared them in real time. A case study, based on the entrustment of China Ministry of Emergency Management (CMEM) and China Institute of Geological Environment Monitoring (CIGEM), deals with a rockslide locates at K18+350 Junhong Road (Beijing, China). First, acquired data are processed for early warning of hazard to ensure the safe transfer of personnel and property within 72 hours in villages and towns affected by dangerous rock masses. Second, the monitoring services ongoing on accurately measurement of each hidden risk spot in the spatial coordinates, elevation and dynamic change and influence range. The methodology has been proved effective in emergency management.