Site:
Orlando Towers, Soweto
System:
GPR (Ground Penetrating Radar) LMX 200 with GPS.
Situation:
ORSCO was appointed to conduct GPR (Ground Penetrating Radar) survey to locate any possible underground structures before new development.
Solution:
ORSCO used an LMX 200 Ground Penetrating Radar from Sensors & Software to conduct the survey. The LMX 200 is equipped with a 250 MHz antenna and Topcon GPS. The scanning area was divided into 2 grids.
Grids were collected with line spacing of 0,5 meters each. GPR grid survey depth was set to 8 meters penetration. The quality of the GPR data was good. The velocity used to calibrate the depth of penetration was adjusted to 0,120 m/ns. Data was processed using Ekko Project Software.
The processed GPR data revealed the following:
Two linear features were identified and superimposed onto Google Earth.
The first linear feature was identified as a pipeline. The second one is old railway tracks not visible from the surface. A few unknown structures are also visible on deeper GPR slices not presented in this document.
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