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Geomechanics and Engineering
  Volume 30, Number 4, August25 2022 , pages 337-343

 open access

Theoretical resistance in cylindrical electrodes with conical tip
Chang-Ho Hong, Jin-Seop Kim and Song-Hun Chong

    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.
Key Words
    cylindrical electrode; electrical resistance; electrode tip; penetration depth
Chang-Ho Hong, Jin-Seop Kim: Disposal Performance Demonstration Research Division, Korea Atomic Energy Research Institute, 111, Daedeok-daero 989, Yuseong-gu, Daejeon, 34057, Republic of Korea
Song-Hun Chong: Department of Civil Engineering, Sunchon National University, 255 Jungang-ro, Sunchon, 57922, Republic of Korea

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