Drone survey of catastrophic cliff failure at North Head
Sydney’s coastline is a spectacular natural asset that we can all enjoy, a catastrophic failure of the cliff line at North Head recently demonstrated that it can also be unpredictably dangerous.
WRL’s CASA certified UAS pilot, Chris Drummond, recently assisted JK Geotechnics with a drone inspection of North Head following a large collapse of the cliff in August. The innovative use of drones on the project provided a safe and a cost effective method of surveying the entire cliff area as well as identifying areas requiring closer inspection via rope access. A 3D point cloud of the cliff area developed using the drone provided the engineering geologists with an interactive method of assessing unstable features in the cliff faces including blocks, wedges and undercuts to assist in their assessment of cliff face stability.