This project is a monthly drone flyover of a landfill cell for volumetric analysis. A total of 200 images were taken at an average height of 80m above ground level in a double grid layout. A total of 5 control targets were used to align the project to the site co-ordinate system with the alignment checked to 3 independently measured targets to ensure project accuracy.
A point cloud was created from the overlapping images. This point cloud was edited to remove surface ‘noise’ such as landfill structures, vehicles, plant etc. to create a digital terrain model (DTM) of the top of waste surface. Volumes were calculated comparing the monthly waste surface to the as-built base-of-landfill and final profile models to report on waste airspace consumed/available. A monthly ortho-image was also created to monitor cell compaction and filling patterns.
A unified system of landfill spatial data could help operators save money and time when it comes to decision-making and auditing. In this article our director Ray Cox explains why:
This article originally appeared in Waste Management Review Magazine.