Open AccessGroundwater Pathway Mapping Using Electrical Resistivity Tomography (ERT) Method
Author(s) -
Syazwan Aiman Sufiyanussuari,
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Saiful Azhar Ahmad Tajudin,
Mohammad Izzat Shaffiq Azmi,
Muhammad Nur Hidayat Zahari,
Nordiana Mohd Muztaza,
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Publication year - 2021
Publication title -
journal of sustainable underground exploration
Language(s) - English
Resource type - Journals
ISSN - 2821-2851
DOI - 10.30880/jsue.2021.01.01.005
Subject(s) - electrical resistivity tomography , electrical resistivity and conductivity , groundwater , subsoil , levee , geology , geotechnical engineering , tomography , drainage , soil science , engineering , electrical engineering , ecology , physics , optics , biology , soil water
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.