Site Investigation using Resistivity Imaging

Hossain, Sahadat; Kibria, Golam; Khan, Sadik

doi:10.1201/9781351047609

Cited by 5 publications

(1 citation statement)

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“…Prinsip kerja metode geolistrik adalah dengan menginjeksikan arus listrik kepermukaan tanah dan mengukur beda potensialnya. Pengukuran dilakukan dengan dua pasang elektroda, sepasang elektroda digunakan untuk mengalirkan arus ke permukaan bumi dan sepasang lainnya digunakan untuk mengukur beda potensialnya Apabila dalam suatu medium diinjeksikan arus listrik kemudian diukur beda potensialnya, maka nilai hambatan dari medium tersebut dapat diperkirakan [5]. Metode geolistrik resistivitas menganut prinsip, setiap lapisan batuan pada bumi memiliki nilai resistivitas yang berbeda tergantung dari banyaknya kandungan air dalam batuan, sifat kimia air, jenis material penyusun batuan dan porositas batuan [6].…”

Section: Pendahuluanunclassified

Groundwater Distribution and Potency in Faculty of Mathematics Natural Sciences, Universitas Jember based 3-Dimensional Resistivity Data Modelling

2022

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Lack of clean water when entering the dry season is a problem that often occurs in the FMIPA University of Jember. The purpose of this research is to know and estimate the potential distribution of the aquifer in the research area. 3D modeling of resistivity data was carried out using Voxler software. The input of resistivity data from the measurement results in the research area that the inversion process had carried out. The modeling results obtained an aquifer potency of 207.862,21 m3 or 21.63% of the total volume on the model image's cross-sectional map, with an irregular distribution pattern. Finally, using this method, the modeling of the aquifer potential volume and distribution can be estimated, and can be used as consideration in the use of groundwater in the Faculty of Mathematics and Natural Sciences, University of Jember.

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Section: Pendahuluanunclassified

Groundwater Distribution and Potency in Faculty of Mathematics Natural Sciences, Universitas Jember based 3-Dimensional Resistivity Data Modelling

2022

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Electrical Resistivity Imaging for Identifying Critical Sulfate Concentration Zones Along Highways

Zamanian,

Thorat,

Asfaw

et al. 2023

Transportation Research Record: Journal of the Transportation R

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Assessing sulfate concentration levels and their distributions within road alignments is crucial for the design of highway projects. Sulfate minerals in soils react with calcium-based additives, leading to sulfate-induced heaving and pavement failures. However, a reasonable assessment of the extent and levels of sulfate concentration using current practices, such as conventional laboratory-based methods, is still challenging because of the spatial heterogeneity of sulfate minerals and their seasonal fluctuations. This study aims to assess the application of electrical resistivity imaging (ERI) to determine levels and distributions of sulfate concentration. Finite element and least-squares optimization were used to process the data and generate subsurface inverted resistivity profiles. Fourteen ERI surveys were carried out for two sites with a potentially high risk of sulfate-induced heaving to help determine the extent of critical sulfate concentration zones. Laboratory tests (sulfate and moisture content tests) were conducted on ten samples collected from the field sites to validate ERI findings. The results showed that electrical resistivities of critical sulfate concentration zones are significantly lower than typical ranges of electrical resistivity of earth materials because of the abundance of salt ions in pore water, which facilitates the flow of electric current. The findings of this study were consistent with laboratory test results in determining the sulfate concentration levels. This study showed that ERI successfully provides a rapid and continuous assessment of critical sulfate concentration zones within highway alignments. The findings of this study will help materials and pavement engineers determine where alternative materials and pavement designs are needed.

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Comparison between Electrical Resistivity Tomography and Geotechnical Field Data for Characterizing Soil Profiles

Alogla¹,

Alawad²,

Elragi³

et al. 2022

TOCIEJ

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Background: Electrical resistivity tests at a project site could be a valuable economical alternative to typical geotechnical soil exploration and a reliable source of data. In the present study, the soil at a constructed underground water tank site in Qassim Region – Saudi Arabia is investigated using the electrical resistivity testing method. Objective: The study aims to compare the results of traditional soil boreholes that were conducted at various stages of the project lifetime with the interpretation of soil resistivity test results. Methods: Eight soil boreholes were drilled at the water tank site to capture the nature of soil layers. The electrical resistivity of soil layers at the site is measured and used to investigate the ground subsurface of the project site. The geophysical software, ZondRes2d is utilized to analyze and interpret the collected data. Results: Both geotechnical soil boreholes and geophysical electrical resistivity tests revealed similar soil profiles with three main layers comprising of backfill material, clay with expansive nature, and weathered limestone and marl. The results of the electrical resistivity tests are also affirmative of available resistance values of different soils in the literature. Conclusion: The study shows that electrical resistivity testing is reliable in capturing the soil nature which presents an attractive tool for preliminary investigation of the soil-related problems of distressed structures.

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Site Investigation using Resistivity Imaging

Cited by 5 publications

References 0 publications

Groundwater Distribution and Potency in Faculty of Mathematics Natural Sciences, Universitas Jember based 3-Dimensional Resistivity Data Modelling

Groundwater Distribution and Potency in Faculty of Mathematics Natural Sciences, Universitas Jember based 3-Dimensional Resistivity Data Modelling

Electrical Resistivity Imaging for Identifying Critical Sulfate Concentration Zones Along Highways

Comparison between Electrical Resistivity Tomography and Geotechnical Field Data for Characterizing Soil Profiles

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