Sub-Surface Investigation Planning

When planning for a geophysical and geotechnical investigation campaign, one should consider the exact end-use of data from a design and engineering perspective. This ensures that suitable and adequate data are collected prior to the campaign. Sub-surface investigations are designed with specific project objectives in mind. These are based on the understanding of the interaction between soil conditions and proposed structures or foundations.

Typically, geophysical surveys determine the seabed and sub-seabed conditions across the proposed site before conducting the accompanying geotechnical survey. It is imperative that geophysical surveys are appropriately designed to identify site conditions, such as bathymetry, seabed slope and spatial geological variation, as subsequent geotechnical investigations depend on the findings of the geophysical survey. However, it is equally important to consider the variability of soil conditions as set by the initial geophysical survey. Not only does this ensure that the correct information is acquired for prospect evaluation, it also allows for efficient planning and management of your exploration budget.