“Aplicación de tomografías de resistividad eléctrica en la caracterización del deslizamiento, ubicado en las inmediaciones de la Subestación Central Eólica Villonaco, al noroeste de la ciudad de Loja”
Electrical resistivity tomography (ERT) is one of the initiatives in the application of technologies used to understand, prevent and mitigate the risks associated with mass movements. In this context, ERTs perform a crucial role in providing a deep and detailed view of the subsurface characteristics...
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| Formato: | bachelorThesis |
| Lenguaje: | spa |
| Publicado: |
2024
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| Materias: | |
| Acceso en línea: | https://dspace.unl.edu.ec/jspui/handle/123456789/28699 |
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Agregar Etiqueta | Sumario: | Electrical resistivity tomography (ERT) is one of the initiatives in the application of technologies used to understand, prevent and mitigate the risks associated with mass movements. In this context, ERTs perform a crucial role in providing a deep and detailed view of the subsurface characteristics, allowing the early identification of areas of instability and facilitating effective prevention and mitigation strategies. This study aims to perform a qualitative and descriptive analysis of the factors that trigger landslides in the vicinity of the Villonaco Wind Power Plant Substation, focusing on the electrical properties and geological characteristics of the subsurface, through the geophysical technique of electrical prospecting and the relationship between field geology and resistivity data, for the detection of changes in the subsurface and scientific research on landslides. The research methodology consisted of three phases: geological characterization of the reservoir outcrops in a portion of the Bolonia and Eucalyptus neighborhood of the city of Loja; application of the ERT, through the implementation of ten geoelectric lines in two landslides, and in areas prone to mass movements, in order to proceed to the automation of geophysical inversion with the Res2Dinv software applying the Schlumberger configuration; and the interpretation of the pseudosection of the electrical resistive models. The geophysical campaign collected resistivity data from 1 to 215 ohm-m, results that were mostly very low resistivities, close to 0 ohm-m and reflected: fine sediment deposits; zones where water flow is dominant; existence of water table; possible faulting or fracturing; fracture planes and the subsurface lithological composition. In the analysis of the study, the efficiency for the analysis and prevention of geodynamic events was demonstrated. Through electrical resistivity measurements, quantitative information was obtained on the geophysical properties of subsurface materials, which allows identifying critical areas with greater precision. Keywords: Geology, Geophysics, Landslides, Electrical Resistivity Tomography, Schlumberger, Res2Dinv; Inversion. |
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