APPLICATION OF ELECTRICAL RESISTIVITY TOMOGRAPHY IN ENGINEERING SITE CHARACTERIZATION: A CASE STUDY OF IGARRA, AKOKO EDO, SOUTHWESTERN NIGERIA
To better understand the subsurface geological composition (relief, fault, fracture, discontinuities, orientation of structures) of the surrounding environment that anticipates infrastructural development in the near future due to population explosion, an Electrical Resistivity Tomography (ERT) surv...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Zibeline International
2022-09-01
|
| Series: | Malaysian Journal of Geosciences |
| Subjects: | |
| Online Access: | https://myjgeosc.com/archives/2mjg2022/2mjg2022-84-87.pdf |
| _version_ | 1797955509590949888 |
|---|---|
| author | Ayodele Falade Temitope Oni Olumuyiwa Oso |
| author_facet | Ayodele Falade Temitope Oni Olumuyiwa Oso |
| author_sort | Ayodele Falade |
| collection | DOAJ |
| description | To better understand the subsurface geological composition (relief, fault, fracture, discontinuities, orientation of structures) of the surrounding environment that anticipates infrastructural development in the near future due to population explosion, an Electrical Resistivity Tomography (ERT) survey was conducted in Igarra, Akoko Edo area of Edo state, Nigeria. The depth to bedrock, possible geologic structures (faults, fractures, voids) were some of the properties investigated. To determine the orientation and continuity of the underlying geological features, 2D resistivity surveys were conducted along three parallel traverses (S-N orientation) with a total length of 205m and an inter-traverse spacing of 50m. The ERT results demonstrate that there are constant areas of low resistivity along the three traverses. Stations between 70 m – 90 m and 110 m – 150 m revealed low resistivity values, indicating possible geological structure. As seen in the resistivity pseudo-section, competent beds can be found at around 5 m and about 10 m in some stations (70 – 90 m and 110 – 150 m). It is generally accepted that geological features (fault, fracture) that pose a risk to geotechnical and engineering projects can be found in the regions with low resistivity. According to the research, pervasive underground geological structures are to blame for most road failures. Since electrical resistivity tomography is useful in describing an engineering site, further geophysical investigation for hydrogeological objectives should be undertaken on the identified faulted and fractured zones to establish its hydrologic importance and reserved for such. |
| first_indexed | 2024-04-10T23:34:14Z |
| format | Article |
| id | doaj.art-b2b717594e4a40d587b36a26da89eb83 |
| institution | Directory Open Access Journal |
| issn | 2521-0920 2521-0602 |
| language | English |
| last_indexed | 2024-04-10T23:34:14Z |
| publishDate | 2022-09-01 |
| publisher | Zibeline International |
| record_format | Article |
| series | Malaysian Journal of Geosciences |
| spelling | doaj.art-b2b717594e4a40d587b36a26da89eb832023-01-12T01:28:21ZengZibeline InternationalMalaysian Journal of Geosciences2521-09202521-06022022-09-0162848710.26480/mjg.02.2022.84.87APPLICATION OF ELECTRICAL RESISTIVITY TOMOGRAPHY IN ENGINEERING SITE CHARACTERIZATION: A CASE STUDY OF IGARRA, AKOKO EDO, SOUTHWESTERN NIGERIAAyodele Falade0Temitope Oni1Olumuyiwa Oso2Department of Geological Sciences, Achievers University Owo, Ondo StateDepartment of Mineral and Petroleum Resources Engineering, Federal Polytechnic Ado-Ekiti, Ekiti StateDepartment of Mineral and Petroleum Resources Engineering, Federal Polytechnic Ado-Ekiti, Ekiti StateTo better understand the subsurface geological composition (relief, fault, fracture, discontinuities, orientation of structures) of the surrounding environment that anticipates infrastructural development in the near future due to population explosion, an Electrical Resistivity Tomography (ERT) survey was conducted in Igarra, Akoko Edo area of Edo state, Nigeria. The depth to bedrock, possible geologic structures (faults, fractures, voids) were some of the properties investigated. To determine the orientation and continuity of the underlying geological features, 2D resistivity surveys were conducted along three parallel traverses (S-N orientation) with a total length of 205m and an inter-traverse spacing of 50m. The ERT results demonstrate that there are constant areas of low resistivity along the three traverses. Stations between 70 m – 90 m and 110 m – 150 m revealed low resistivity values, indicating possible geological structure. As seen in the resistivity pseudo-section, competent beds can be found at around 5 m and about 10 m in some stations (70 – 90 m and 110 – 150 m). It is generally accepted that geological features (fault, fracture) that pose a risk to geotechnical and engineering projects can be found in the regions with low resistivity. According to the research, pervasive underground geological structures are to blame for most road failures. Since electrical resistivity tomography is useful in describing an engineering site, further geophysical investigation for hydrogeological objectives should be undertaken on the identified faulted and fractured zones to establish its hydrologic importance and reserved for such.https://myjgeosc.com/archives/2mjg2022/2mjg2022-84-87.pdfelectrical resistivity tomographyresistivitysite characterizationgeologic structuredipole-dipole |
| spellingShingle | Ayodele Falade Temitope Oni Olumuyiwa Oso APPLICATION OF ELECTRICAL RESISTIVITY TOMOGRAPHY IN ENGINEERING SITE CHARACTERIZATION: A CASE STUDY OF IGARRA, AKOKO EDO, SOUTHWESTERN NIGERIA Malaysian Journal of Geosciences electrical resistivity tomography resistivity site characterization geologic structure dipole-dipole |
| title | APPLICATION OF ELECTRICAL RESISTIVITY TOMOGRAPHY IN ENGINEERING SITE CHARACTERIZATION: A CASE STUDY OF IGARRA, AKOKO EDO, SOUTHWESTERN NIGERIA |
| title_full | APPLICATION OF ELECTRICAL RESISTIVITY TOMOGRAPHY IN ENGINEERING SITE CHARACTERIZATION: A CASE STUDY OF IGARRA, AKOKO EDO, SOUTHWESTERN NIGERIA |
| title_fullStr | APPLICATION OF ELECTRICAL RESISTIVITY TOMOGRAPHY IN ENGINEERING SITE CHARACTERIZATION: A CASE STUDY OF IGARRA, AKOKO EDO, SOUTHWESTERN NIGERIA |
| title_full_unstemmed | APPLICATION OF ELECTRICAL RESISTIVITY TOMOGRAPHY IN ENGINEERING SITE CHARACTERIZATION: A CASE STUDY OF IGARRA, AKOKO EDO, SOUTHWESTERN NIGERIA |
| title_short | APPLICATION OF ELECTRICAL RESISTIVITY TOMOGRAPHY IN ENGINEERING SITE CHARACTERIZATION: A CASE STUDY OF IGARRA, AKOKO EDO, SOUTHWESTERN NIGERIA |
| title_sort | application of electrical resistivity tomography in engineering site characterization a case study of igarra akoko edo southwestern nigeria |
| topic | electrical resistivity tomography resistivity site characterization geologic structure dipole-dipole |
| url | https://myjgeosc.com/archives/2mjg2022/2mjg2022-84-87.pdf |
| work_keys_str_mv | AT ayodelefalade applicationofelectricalresistivitytomographyinengineeringsitecharacterizationacasestudyofigarraakokoedosouthwesternnigeria AT temitopeoni applicationofelectricalresistivitytomographyinengineeringsitecharacterizationacasestudyofigarraakokoedosouthwesternnigeria AT olumuyiwaoso applicationofelectricalresistivitytomographyinengineeringsitecharacterizationacasestudyofigarraakokoedosouthwesternnigeria |