Geomechanics and Engineering

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Theoretical resistance in cylindrical electrodes with conical tip

  • Hong, Chang-Ho (Disposal Performance Demonstration Research Division, Korea Atomic Energy Research Institute) ;
  • Kim, Jin-Seop (Disposal Performance Demonstration Research Division, Korea Atomic Energy Research Institute) ;
  • Chong, Song-Hun (Department of Civil Engineering, Sunchon National University)
  • Received : 2022.04.14
  • Accepted : 2022.07.21
  • Published : 2022.08.25
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Abstract

The electrical resistivity method is a well-known geophysical method for observing underground conditions, (such as anomalies) and the properties of soil and rock (such as porosity, saturation, and pore fluid characteristics). The shape of electrodes used in an electrical resistivity survey depends on the purpose of the survey and installation conditions. Most electrodes for field applications are cylindrical for sufficient contact with the ground, while some are conically sharpened at their tips for convenient penetration. Previous study only derived theoretical equations for rod-shaped electrodes with spherical tips. In this study, the theoretical resistance for two cylindrical electrodes with conical tips is derived and verified experimentally. The influence of the penetration depth and tip on the measurement is also discussed.

Keywords

Acknowledgement

This work was supported by National Research Foundation of Korea (NRF) and the Institute for Korea Spent Nuclear Fuel (iKSNF) grant funded by the Korea government (Ministry of Science and ICT, MSIT) (2022M2E3A3015608 and 2021M2E1A1085193).

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