Mining & Infrastructure

The application of the correct geophysical techniques combined with expert analysis can add value to almost any geotechnical investigation. Whether conducting an initial site investigation to determine sub-surface structure or a more detailed investigation to determine geotechnical parameters for engineering purposes, GBGMAPS have the equipment and know-how to help.

GBGMAPS have the capability and experience to carry out a range of geophysical methods for common problems such as;

• Seismic methods for determining geotechnical parameters including shear modulus and Young's modulus.
• Stratigraphic profiling for bedrock depth and hardness for directional drilling, trenching, road/rail cuttings
• Stratigraphic profiling for sediment parameters including ground compaction
• Electrical resistivity and conductivity imaging to provide information on geology including location of cavities, boulder floaters, aquifers or fracture zones
• High resolution radar reflection imagery for shallow stratigraphy mapping and subsurface features including cavities, voiding, karst formations.
• Resistivity soundings to provide in-situ electrical properties for earthing design
• Down-hole geophysical logging for geotechnical, groundwater studies
• Cross-hole and down-hole seismic methods for geological modelling
• Delineation of magnetic ore bodies
• Geomorphology - sand layer, overburden thickness, alluvial deposits

Images

Seismic S-wave velocity section and interpretation over a failed rail embankment and culverts

Seismic profiling for bedrock depth for horizontal directional drilling

Magnetometer survey for defining iron ore resources

Subsurface contamination assessment for a proposed road widening project

Geophysical investigation to map voiding beneath port hardstand