Surveying the Subsurface Sketching the burried utilities
Geotech with reliable and professional geophysical survey techniques
GeoTech is expertise in the deployment of the geophysical instruments,
coupled with the field application of the latest processing and visualisation software
to capture key information which is not available through other means.
Low frequency Ground Penetrating Radar surveying can penetrate the ground to several tens of meters and image significant geological structures including
stratigraphy and the presence of voids.
Structural Investigations using GPR
Ground Penetrating Radar has enormous potential for use on engineered structures. It allows rapid non-destructive coverage,
with a depth penetration of up to 2m. The approach
allows to image multiple layers of construction
detail, the calculation of thicknesses, and the location
of internal metalwork including multiple layers of reinforcement.
Cross-borehole seismics is
used to determine the elastic properties of a
chalk bedrock with depth, prior to a vibration
analysis for foundation design. Cross borehole tomography allows a 2D
section of ground velocity to be generated. The integration of cross borehole
tomography with other seismic methods
offers to better constrain seismic boundaries
and improve the quality of geological and
hydrological models of a site.
Services and Utility Tracing
By conducting GPR over a grid in two
directions, the data can be merged to form
accurate three dimensional volumes - even
in a crowded urban environments. The 3D
volume can be manipulated to show slices
through the data. It is then possible to map
the presence of spatially persistent
anomalies across multiple survey lines.
Our Valued Clients
We work closely with a wide range of clients from different sectors and regions across public sector, private sector and local and national governments.