| Revista: | Revista de geología aplicada a la ingeniería y al ambiente |
| Base de datos: | |
| Número de sistema: | 000539562 |
| ISSN: | 2422-5703 |
| Autores: | Catinari, Juan Matías1 Gatica, José Ricardo1 Aires, Axel Nicolás1 Fernández, Camila Ludmila1 Navarro, Joaquín Salvador1 Bassani, Santiago Andrés2 |
| Instituciones: | 1Universidad Nacional del Comahue, Facultad de Ingeniería, Comahue, Neuquén. Argentina 2Ministerio de las Culturas del Neuquén, Departamento de Espeleología, Comahue, Neuquén. Argentina |
| Año: | 2023 |
| Número: | 50 |
| Paginación: | 010-010 |
| País: | Argentina |
| Idioma: | Español |
| Tipo de documento: | Artículo |
| Resumen en inglés | The ANPCC (Cuchillo Curá protected natural area) currently contains the most extensive cave system in Argentina, with more than 5 kilometers extension represented by Arenal, The ANPCC (Cuchillo Curá protected natural area) currently contains the most extensive cave system in Argentina, with more than 5 kilometers extension represented by Arenal, Templo, Gendarme and Cabritos caverns.The structural stability of these are undeveloped and the motivation of this work is to contribute with studies to the subject. In order to achieve this particular aim, two specific susceptibility analysis methodologies in cave systems were used, applying both in caves of karstic or volcanic origin, developed in recent years: The Geotechnical Cave Index (Brandi et al., 2020) and the Q Index. adapted by Jordá-Bordehore (2017). Both classifications were applied to study a particular sector of the Arenal cave, leaving the rest of the cave system for future studies as required by the Ministry of Cultures of the province of Neuquén. The resulting zonification of the section studied was characterized based on these classifications, acquiring susceptibility to structural instability maps. Although each of the two classifications has been designed independently, the application of both showed us to compare their results and gain experience in the use of each of them, which will be a great contribution to decide how to continue the stability evaluation of the rest of the Cuchillo Curá Cave System.Based on the infield observations and the geotechnical studies carried out, it was determined that the Arenal cavern is contained in a poor to good (RMR) rock mass quality, affected by systematic discontinuities and, particularly, a clayey level that, due to its expansive, geometric and low resistance characteristics, it is considered as the most determining factor that influences its instability.of these are undeveloped and the motivation of this work is to contribute with studies to the subject. In order to achieve this particular aim, two specific susceptibility analysis methodologies in cave systems were used, applying both in caves of karstic or volcanic origin, developed in recent years: The Geotechnical Cave Index (Brandi et al., 2020) and the Q Index. adapted by Jordá-Bordehore (2017). Both classifications were applied to study a particular sector of the Arenal cave, leaving the rest of the cave system for future studies as required by the Ministry of Cultures of the province of Neuquén. The resulting zonification of the section studied was characterized based on these classifications, acquiring susceptibility to structural instability maps. Although each of the two classifications has been designed independently, the application of both showed us to compare their results and gain experience in the use of each of them, which will be a great contribution to decide how to continue the stability evaluation of the rest of the Cuchillo Curá Cave System.Based on the infield observations and the geotechnical studies carried out, it was determined that the Arenal cavern is contained in a poor to good (RMR) rock mass quality, affected by systematic discontinuities and, particularly, a clayey level that, due to its expansive, geometric and low resistance characteristics, it is considered as the most determining factor that influences its instability. |
| Resumen en español | El ANPCC (Área Natural Protegida Cuchillo Curá) contiene actualmente al sistema cavernario más extenso de Argentina, con más de 5 kilómetros de extensión conformado por las cavernas Arenal, Templo, Gendarme y Cabritos.La estabilidad estructural de las mismas es poco conocida y es motivación de este trabajo aportar con estudios que desarrollen la temática. A tal fin, se emplearon dos metodologías específicas de análisis de susceptibilidad en sistemas cavernarios, aplicables tanto en cavernas de origen kárstico o volcánico: el Índice Geotécnico de Cavernas (Brandi et al., 2020) y el Índice Q adaptado por Jordá-Bordehore (2017). Ambas clasificaciones fueron aplicadas para estudiar particularmente un sector de la caverna Arenal, dejando el resto del sistema cavernario para próximos estudios en la medida que sea requerido por el Ministerio de las Culturas de la provincia del Neuquén. La resultante sectorización del tramo estudiado fue caracterizada en función de estas clasificaciones, ofreciendo mapas de susceptibilidad a la inestabilidad estructural. Si bien cada una de estas clasificaciones fue diseñada en forma independiente, la aplicación de ambas nos permitió comparar sus resultados y tomar experiencia en el uso de cada una de ellas, lo cual será un gran aporte para decidir cómo continuar la evaluación de estabilidad del resto del Sistema Cavernario Cuchillo Curá.En función de las observaciones en campo y los estudios geotécnicos desarrollados, se determinó que la caverna Arenal está contenida en un macizo rocoso de calidad mala a buena (RMR), afectada por discontinuidades sistemáticas y, particularmente, un nivel arcilloso que, por sus características expansivas, geométricas y de reducida resistencia, es considerado como el factor condicionante que más influye en la inestabilidad de la misma. |
| Disciplinas: | Geociencias |
| Palabras clave: | IGC, índice Q, susceptibilidad cavernaria, arcillas expansivas, Geología |
| Keyword: | Q Index, expansive clays, GCI, cave susceptibility, Geology |
| Texto completo: | Texto completo (Ver PDF) |
