A brief description is given of the use of ground probing radar for ground investigation by Wimpey Laboratories on a difficult site hiding old mine workings at Bagilt on the Dee estuary. The system, produced by geophysical survey systems of New Hampshire USA, consists of an antenna in a wheeled trolley connected by cable to a chart-recorder, and a tape recorder. The instrument works in "real time" - information is displayed on the chart as it is received; the tape recorder enables more accurate analysis to be made later. The instrument's success in the USA had been in areas of sandy sub-soil or hard rock. Britain with its high proportion of wet clays is a very different terrain for the instrument. Four conventional surveys were conducted by different firms including Wimpey which undertook resistivity and seismic refraction surveys. Although the radar results have not yet been fully evaluated, the trial has shown how quickly an awkward site such as Bagilt can be surveyed with the system compared to a resistivity survey. The system shows a very good response to buried features. /TRRL/

Media Info

  • Features: Photos;
  • Pagination: 18 p.
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00194900
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Aug 15 1979 12:00AM