Análisis de estabilidad a posteriori en macizos rocosos metamórficos del Cordón de Sierra Chica, Provincia de Córdoba, Argentina.

Authors

  • Enrique Quintana Crespo Departamento de Construcciones Civiles, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Córdoba, Argentina. Factultad de Ingeniería, Universidad Católica de Córdoba, Córdoba, Argentina
  • Franco Primo Soffietti Instituto de Estudios Avanzados en Ingeniería y Tecnología, Universidad Nacional de Córdoba - CONICET, Córdoba, Argentina. Factultad de Ingeniería, Universidad Católica de Córdoba, Córdoba, Argentina.

Keywords:

zonification, lithology, stability analysis, rock mass

Abstract

Rock massifs that constitute the Sierra Chica mountains have been matter of geotechnical studies for the execution of important rock road works that Cordoba Province has carried out in the last ten years. The stability analysis implemented for the construction of rocky slopes in mountain road works are performed using geotechnical models based on limit equilibrium theories and in the determination of safety factors, values that quantify the difference between real slope conditions and landslide conditions. These methods require a correct massif characterization, i.e., a geological model that properly represents materials and processes involve in the slope stability. With the objective of knowing mechanisms, models and instabilities geometry on the route RP34 inside the Sierra Chica mountains and for knowing the mechanical behavior of the materials, in the present study a back analysis was carried out on the western slope of the mountain range and on one of the slopes built on RP34.  The analysis of the western slope was carried out in a sector where a slope generated for the construction of the route failed (EG15) and with the results obtained, a new slope of the route was analyzed (EG17) where landslides occur in the last year. This last analysis was carried out, through a global evaluation considering the possibility of a circular fault involving the entire slope and, in the sectors where the landslides occurred, local conditions were evaluated through a wedge failure analysis.

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Author Biographies

  • Enrique Quintana Crespo, Departamento de Construcciones Civiles, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Córdoba, Argentina. Factultad de Ingeniería, Universidad Católica de Córdoba, Córdoba, Argentina
    The author is a Geological Engineer (UNC), Msc Quaternary Engineering Geology (VUB - Belgium)
    Doctor of Engineering Sciences (UNC). Adjunct Professor of Geotechnics I (Civil Engineering - UNC)
    Cat Research Professor - III (UNC), Civil Works Technology Professor (Civil Engineering - UCC)
    Research Project Director (UCC)     The author is a Geological Engineer (UNC), Msc Quaternary Engineering Geology (VUB - Belgium), Doctor of Engineering Sciences (UNC). Adjunct Professor of Geotechnics I (Civil Engineering - UNC), Cat Research Professor - III (UNC), Civil Works Technology Professor (Civil Engineering - UCC), Research Project Director (UCC)   Ícono de validado por la comunidad           Abrir en Go         Abrir en Goog
  • Franco Primo Soffietti, Instituto de Estudios Avanzados en Ingeniería y Tecnología, Universidad Nacional de Córdoba - CONICET, Córdoba, Argentina. Factultad de Ingeniería, Universidad Católica de Córdoba, Córdoba, Argentina.

    Civil Engineer - Doctoral Scholarship working at: IDIT] INSTITUTO DE ESTUDIOS AVANZADOS EN INGENIERIA Y TECNOLOGIA -  [CCT CORDOBA] CENTRO CIENTIFICO TECNOLOGICO CONICET - CORDOBA -
    [CONICET] CONSEJO NACIONAL DE INVESTIGACIONES CIENTIFICAS Y TECNICAS -

References

[1] Balbis A., 2016. Estudio geológico- geotécnico para Variante Costa Azul. Disponible en: https://adarsa.org.ar/wp-content/uploads/2020/04/variante-costa-azul-anexo4-estudio-geologico.pdf.

[2] Balbis A., Cerutti J. (2019) Definition of geological- geotechnical models in slope stability studies applied to road projects in complex geological zones. 14th International Congress of Rock Mechanics and Rock Engineering. ISRM. Foz do Iguassu. Brazil.

[3] Beltramone C. (2005), Dinámica de las vertientes en la ladera occidental de la Sierra Chica de Córdoba. Revista de la Asociación Geológica Argentina 60(1):009-015.

[4] Bishop, A. W. (1955). The use of the slip circle in the stability analysis of slopes. Geotechnique, 5(1), 7-17.

[5] García, F. y de la Rosa, A. (2021). Análisis de estabilidad de un talud rocoso mediante el criterio de Hoek & Brown considerando un mecanismo de falla no circular. XXV Congreso Argentino de Mecánica de Suelos e Ingeniería Geotécnica. Noviembre 2021, Misiones, Argentina.

[6] Hoek, E. y Brown, E.T. (1980). Empirical strength criterion for rock masses. J. Geotech. Engng Div., ASCE 106 (GT9), 1013-1035.

[7] Janbu, N. (1973). Slope stability computations. Publication of: Wiley (John) and Sons, Incorporated.

[8] Lencinas A., (1971). Geología del Valle de Punilla entre Bialet Massé y La Cumbre, Provincia de Córdoba. Boletín de la Asociación Geológica de Córdoba. Tomo I. N° 2.

[9] Quintana Crespo E. (2010). Estudios preliminares para la implementación de un sistema de protección contra desprendimientos rocosos en un tendido ferroviario de montaña. Conferencia sobre deslizamientos de terreno y peligros asociados. ASAGAI (Asoc. Arg. Geología Aplicada a la Ing) Córdoba. Ed. Digital.

[10] Quintana Crespo E. (2010). Implementación de un sistema de protección contra desprendimientos rocosos en un tendido ferroviario de montaña. XX CAMSIG (Congreso Argentino de Mecánica de suelos e Ing. Geotécnica) SAIG (Sociedad Arg. de Ing. Geotécnica) Mendoza. Ed. Digital.

[11] Quintana Crespo, E. y Navarro, M. A. (2020). Línea Base para Riesgo de Caída de Rocas en un camino de montaña en Sierra Chica, Provincia de Córdoba, Argentina. Revista de Geología Aplicada a la Ingeniería y al Ambiente, (45), 33-47.

[12] Quintana Crespo, E. y Soffietti, F. P. (2020). Una Zonificación Geotécnica Aplicada a Taludes Rocosos en el Cordón de Sierra Chica, Provincia de Córdoba, Argentina. Revista De La Facultad De Ciencias Exactas, Físicas Y Naturales, 7(2), 27-43.

[13] Rocscience Ltd. Swedge-Probabilistic analysis of the geometry and stability of surface wedges. Toronto, Canada; 2004.

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Published

2022-12-30

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Section

Ciencias Naturales

How to Cite

Análisis de estabilidad a posteriori en macizos rocosos metamórficos del Cordón de Sierra Chica, Provincia de Córdoba, Argentina. (2022). Revista De La Facultad De Ciencias Exactas, Físicas Y Naturales, 9(2), 57-67. https://revistas.psi.unc.edu.ar/index.php/FCEFyN/article/view/36064