Groundwater Pathway Mapping Using Electrical Resistivity Tomography (ERT) Method

Authors

  • Syazwan Aiman Sufiyanussuari Faculty of Civil and Built Environment, Universiti Tun Hussein Onn Malaysia, 86400 Johor, MALAYSIA
  • Saiful Azhar Ahmad Tajudin
  • Mohammad Izzat Shaffiq Azmi Faculty of Civil and Built Environment, Universiti Tun Hussein Onn Malaysia, 86400 Johor, MALAYSIA
  • Muhammad Nur Hidayat Zahari Preston GeoCEM Sdn Bhd, 33A, Jalan Universiti 4, Taman Universiti, 86400 Parit Raja, Johor, MALAYSIA
  • Nordiana Mohd Muztaza School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, MALAYSIA

Keywords:

Groundwater, electrical resistivity tomography, slope instability

Abstract

Geophysical electrical resistivity method has been one of the more popular non-destructive method to explore the subsurface. Geophysical electrical resistivity tomography (ERT) subsurface profiling was conducted to map the groundwater path along the embankment. The groundwater path able to decrease the slope stability, thus its need to locate the position for conduct the slope remediation via subsoil drainage. In this study, Terrameter LS2 model, electrodes, cables, battery, and cable connectors were the equipment used for measurement. This study uses cable spread line at 200m with 2.5m spacing between electrodes by using gradient protocol. The resistivity data was analyzed using RES2DINV software. The interpretation of groundwater path is based on the resistivity values less than 100 ohm.m, which is interpreted as saturated materials. This study demonstrates the efficiency of application of electrical resistivity tomography (ERT) in detecting the groundwater pathways. This investigation will help in sustaining the slope stability via indicating the position of groundwater pathways, and thus implementing the slope remediation work.

 

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Published

16-12-2021

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Section

Articles

How to Cite

Sufiyanussuari, S. A., Ahmad Tajudin, S. A., Azmi, M. I. S. ., Zahari, M. N. H. ., & Mohd Muztaza, N. (2021). Groundwater Pathway Mapping Using Electrical Resistivity Tomography (ERT) Method. Journal of Sustainable Underground Exploration , 1(1), 32-37. https://publisher.uthm.edu.my/ojs/index.php/j-sue/article/view/10164