GPR for the detection of sinkholes
Ground Penetrating Radar (GPR) can be used to detect the presence and extents of sinkholes, underground voids and subsidence. During the construction of a new tower block in Manchester (UK), the road collapsed underneath a lorry delivering construction materials for a new block, virtually swallowing the lorry into a sink hole 4m deep and several meters across…
Very low frequency GPR survey to determine depth of landfill
There are many disused landfill sites scattered around the UK. At each of these, the thickness of the waste can vary from just a few meters to tens of meters deep. In the past the sites were left open and once the land had been filled to capacity the waste was compressed and capped. Over the years many of those landfill sites have been left unmanaged and become scrubland...