Stresses and stability of a mine paste fill

Laín Huerta, Carlos and Ramírez Oyanguren, Pedro and Laín Huerta, Ricardo and Alejano Monge, Leandro R. and Carnero Carnero, Félix and Santana, Ceferino (2012). Stresses and stability of a mine paste fill. In: "12th ISRM International Congress on Rock Mechanics. Harmonising Rock Engineering and the Environment", 17/10/2011 - 21/10/2011, Beijing (China). ISBN 978-0-415-80444-8. pp. 1541-1545.

Description

Title: Stresses and stability of a mine paste fill
Author/s:
  • Laín Huerta, Carlos
  • Ramírez Oyanguren, Pedro
  • Laín Huerta, Ricardo
  • Alejano Monge, Leandro R.
  • Carnero Carnero, Félix
  • Santana, Ceferino
Item Type: Presentation at Congress or Conference (Article)
Event Title: 12th ISRM International Congress on Rock Mechanics. Harmonising Rock Engineering and the Environment
Event Dates: 17/10/2011 - 21/10/2011
Event Location: Beijing (China)
Title of Book: Harmonising Rock Engineering and the Environment
Date: 2012
ISBN: 978-0-415-80444-8
Subjects:
Faculty: E.T.S.I. Minas (UPM)
Department: Explotación de Recursos Minerales y Obras Subterráneas [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Se describe el comportamiento de los rellenos de pasta de las cámaras primarias de la mina de Aguas Teñidas y se calcula la resistencia que deben tener dichos rellenos para que no se desmoronen las paredes de los mismos que quedan expuestas al extraer las cámaras secundarias.Abstract:This article presents the study carried out at an underground mine to understand the stress distribution in the paste fills and to calculate the stability of the paste walls. The mine is operated using sublevel stopes. Three-dimensional numerical models designed with the FLAC 3D software are used to study the distribution of the vertical stresses in the paste. The numerical models have demonstrated that an arc-like effect is produced in the paste fills of the primary stopes. This effect relieves the vertical stresses and increases the stability of the exposed paste wall fill. Based on the results of the numerical models, in the 30m high secondary stopes, the arc effect starts to be evident only in paste walls with a width/height ratio lower than 0.8. 3-D calculations show that the use of Mitchell, R. J. et al. (1982) formula may be risky when estimating the fill stability in secondary stopes.

More information

Item ID: 20859
DC Identifier: http://oa.upm.es/20859/
OAI Identifier: oai:oa.upm.es:20859
Deposited by: Memoria Investigacion
Deposited on: 03 Oct 2013 08:37
Last Modified: 22 Sep 2014 11:21
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