Physical-mechanical and structural evaluation of the Catoca gneissic massif for designing blasting
Keywords:
blasting of mines, physical-mechanical properties, rock cracking, gneisses Catoca mineAbstract
Due to its importance and influence in the design of the blasting works taking into consideration the action of the explosion in the environment, in this work the main physical-mechanical properties of the embedding rocks are determined and the structure of the massif, constituted by gneisses, is analyzed at the Catoca mine. The density, volumetric mass, limit of resistance to simple static compression, limits of resistance to static traction and velocity of the longitudinal elastic waves were the properties determined in the massif; In the case of the structural study, with the use of the geological method, the systems and families of cracks were surveyed. As a result, the values of the aforementioned properties and the characterization of the different sectors of the mine according to their properties and cracking are offered, aspects of capital importance for the design of the blasting of the box rocks.Downloads
References
DIÉGUEZ, Y. Campo tenso-deformacional para voladuras con cordón detonante en el laboreo de túneles. Minería y Geología, 29(3): 38-55, 2013.
DIÉGUEZ, Y.; Otaño, J. y Sargentón, G. Diseño de voladuras de contorno. Minería y Geología, 30(3): 49-66, 2014.
HOEK, E. Practical Rock Engineering. New edition complete, 24 MB. 2014. Consulta: 20 julio 2014. Disponible en: www.rocscience.com.
KAZIKAEV, D. M. Procesos geomecánicos en la explotación conjunta y ulterior de las menas. Moscú: Nedra, 1981. 89 p.
KALICHENKO, V. M.; STIEPIN, N. I.; TUPIKLIN, I. I. Y USHAKOV, I. N. Geometría del subsuelo. Novcherkask: YRGTU, 2000. 78 p.
LANGEFORS, U. Y KIHLSTROM, B. Técnica Moderna de Voladura de Rocas. Bilbao: Ediciones Urmo, 1963.
NEVES, D. Y GUARDADO, R. Deslizamientos de taludes en el yacimiento kimberlítico de Catoca (Angola). Minería y Geología, 27(3): 26-42, 2011.
NEVES, D. Y GUARDADO, R. Evaluación de las propiedades geotécnicas de las rocas y suelos en el complejo minero kimberlítico de Catoca (Angola). Minería y Geología, 28(3): 1-17, 2012.
OTAÑO, J. Fragmentación de rocas con explosivos. La Habana: Félix Varela, 1998.
PEDRO, A.; JOE, S. Y OTAÑO, J. Análisis del diseño de voladuras con cargas compactas en la cantera de áridos El Cacao. Minería y Geología, 22(4), 2006.
SUJANOV, A. F. Y KUTUZOV, B. N. Fragmentación de rocas. Moscú: Nedra, 1967.
Published
How to Cite
Issue
Section
- Authors retain copyright and guaranteeing the right magazine to be the first publication of the work as licensed under a Creative Commons Attribution-NonCommercial that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Authors may establish separate supplemental agreements for the exclusive distribution version of the work published in the journal (eg, place it in an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
- Authors are allowed and recommended to disseminate their work through the Internet (e.g., in institutional telematic archives or on their websites) before and during the submission process, which can produce interesting exchanges and increase citations of the published work. (See The effect of open access)
