This is a great video by Vermont DOT that describes how scaling is used as part of their mitigation efforts for rockfall. If you have never seen how high scaling works, this gives you a good perspective. Scalers use ropes to access the slope and work from the top down to test rocks with prybars and other tools to see if they are loose, bringing them down if they are. They also use airbags, pneumatic “pillows” that start flat and can slide into cracks and joints and be inflated using compressed air to push rocks off the slope.
The latest Geobruug newsletter talked about the variety of rockfall mitigation solutions they have installed at the Kanmantoo open pit mine in Australia in recent years. Those include flexible rockfall barriers, anchored mesh, rockfall attenuators, […]