GEOPHYSICAL SURVEYS
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Ground Penetrating Radar (GPR)
Electrical Resistivity Imaging
Electromagnetic Conductivity Surveys
Magnetic Surveys
Other Geophysical Methods
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MOD Larkhill. Resistivity Imaging & Conductivity Surveys - Mapping tunnel locations related to a WW1 practice trench system
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Geophysical
Survey Consultants and Contractor Services:-
Geophysical surveys can be deployed to
provide engineering and environmental geophysics information which could
only otherwise be obtained through intrusive inspection or
excavation. A full geophysical survey can represent a substantial
cost saving when compared to traditional blind site investigation since the risks of unknown site issues are vastly reduced.
Applications:-
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Brownfield redevelopment - walk over check surveys of remediated housing developments / locate in-situ culverts/pipes and concrete slabs
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Soil electrical resistivity and earth testing at wind farm projects / Wenner 4 pole
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In-situ soil thermal resistivity / conductivity for cable rating calculations
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Pollution control interceptors - electronic trial pits using GPR to find an ideal location
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Archaeology
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Landfill - formation level surveys for voids & faults / location of waste types & internal bunds / location of lost or historic cells / leachate plumes
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Forensics - Police searches
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Mine shafts and mining related subsidence
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Unexploded ordnance UXO
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Pipelines and route surveys / soil corrosivity
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Voids, caves and sinkholes
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Geology - stratigraphy / depth to rockhead / faults
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Infilled quarry boundaries / opencast boundaries
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Civil engineering - site obstructions / remediation verification / in-situ foundations & cellars
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Slope stability - overburden topography / faults / water ingress
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Structural engineering - masonary arch bridges / chimney flues / reinforcement mapping / water ingress
Our consultancy services
include recommending the most reliable geophysical survey methods for the particular
problem, design and review of surveys for tender purposes and
also the ability to conduct geophysical surveys and analysis.
Although often perceived as a last resort,
geophysical methods should be included in the initial project
conception as a means to provide wide-area coverage and to indicate
areas for traditional trial-pits, boreholes or break-outs. Borehole and trial pits only provide tiny glimpses into
the subsurface and yet are commonly used to define a site model. Time and
time again we see cases where traditional methods missed targets of
concern (sometimes by a few metres) causing delays and follow on costs far in excess of any geophysical survey cost.
In these days of high costs and due diligence can you afford not to
have the most comprehensive information to hand for your design?
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