How we do it

EMerald’s unique method is based on a three-step approach:

  1. An airborne geoscanning survey is carried out and penetrates hundreds of meters below the surface. We then process the electromagnetic data of such surveys, resulting in a 3D model with geophysical parameters such as electrical resistivity.
  2. Based on the geoscanning results, geotechnical drilling is done at strategic locations. Such intrusive soil investigations are costly, but the airborne scan helps identify priority areas and trouble spots early on, reducing the money used on redundant soil investigation. These drillings provide detailed point information, and their value is maximized in the final step.
  3. Our team of experts combines all these data into 3D models using machine-learning algorithms. These models provide full coverage with parameters that are relevant for the further planning and design work. 

Traditionally, the geotechnical industry has largely relied on drillings. When no prior knowledge exists, resources are typically spent on exploratory drillings to gain an overview of the project area. Many of these are later considered redundant and add little value. The gaps between boreholes remain too large to mitigate geological risk.

Geophysical investigations have been an exception rather than a rule in geotechnical works. When they are used, the geophysical products are often delivered with little interaction with geotechnical investigations. Only a few specialized engineers can use the delivered geophysical data to its full extent. Value is lost.

Nowadays at EMerald, we use geophysical and geotechnical investigations together to unlock their true potential. Rather than confusing geophysical parameters, we deliver engineering parameters with quantified uncertainty as 3D models that are directly used in planning works. Moreover, rather than getting point-wise data at geotechnical soundings locations, we can instead get a better overview of soil properties in the project area. 

Soil type (Quick Clay)