Smart Structures and Systems

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Measurements of dielectric constants of soil to develop a landslide prediction system

  • Rhim, Hong Chul (Department of Architectural Engineering, Yonsei University)
  • Received : 2010.06.30
  • Accepted : 2010.11.09
  • Published : 2011.04.25
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Abstract

In this study, the measurements of the dielectric constants of soil at 900 MHz and 1 GHz were made to relate those properties to the moisture content of the soil. This study's intention was to use the relationship between the dielectric constant and the moisture content to develop a landslide prediction system. By monitoring the change of the moisture content within the soil using ground penetrating radar (GPR) systems in the field, the possibility of a landslide is expected to be detected. To establish a database for the dielectric constants and the moisture content, the measurements of soil samples were made using both an open-ended dielectric coaxial probe and the GPR. Based on the measurement results, correlations between the GPR and reflector for each frequency at 900 MHz and 1 GHz were found for the dielectric constants and the moisture content. Finally, the mechanism of the measurement device to be implemented in the field is suggested.

Keywords

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