|
Descripción
|
|
|---|---|
| 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. | |
|
Internacional
|
Si |
|
Nombre congreso
|
XII Congreso Internacional de Mecánica de Rocas. |
|
Tipo de participación
|
960 |
|
Lugar del congreso
|
Beijing. China |
|
Revisores
|
Si |
|
ISBN o ISSN
|
|
|
DOI
|
|
|
Fecha inicio congreso
|
18/10/2011 |
|
Fecha fin congreso
|
21/10/2011 |
|
Desde la página
|
|
|
Hasta la página
|
|
|
Título de las actas
|
|