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Laboratory Experiments of a Ground-Penetrating Radar for Detecting Subsurface Cavities in the Vicinity of a Buried Pipe

매설관 주변 지하 공동 탐지를 위한 지하 탐사 레이다의 모의실험

  • Received : 2015.10.02
  • Accepted : 2016.01.07
  • Published : 2016.02.29

Abstract

In this paper, a feasibility on a ground-penetrating radar for detecting subsurface cavities near buried pipes has been investigated. The experimental setup was implemented by employing an impulse ground-penetrating radar system, a xy Cartesian coordinate robot, an underground material filled tank, a metal pipe and a simulated cavity model. In particular, the simulated cavity model was constructed by packing Styrofoam chips and balls, which have both similar electrical properties to an air-filled cavity and a solid shape. Through typical three experiments, B-scan data of the radar have been acquired and displayed as 2-D gray-scale images. According to the comparison of B-scan images, we show that the subsurface cavities near the buried pipes can be detected by using the radar survey.

Keywords

Ground-Penetrating Radar;Scaled-Down Measurement;Sinkhole;Subsurface Cavity

References

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Acknowledgement

Supported by : 제주대학교