posted on 2025-05-09, 08:45authored byA. M. Suchowerska, Richard Merifield, John CarterJohn Carter
Preventing roof collapse in underground tunnels, natural cavities or mines is a challenge to geotechnical engineering. To evaluate the roof stability of underground cavities two theoretical methods have been used in this study. The rock mass strength has been described by the Hoek-Brown failure criterion. The results of both methods were found to be consistent and have been presented as stability charts for a range of rock properties and geometries. The results of the analysis allow for prediction of roof collapse, but they can also be used to determine whether the failure surface that develops in the rock mass is local or extends through the full depth of cover. This is of significant concern if there are overlying cavities and if estimating surface subsidence.
History
Source title
Computer Methods for Geomechanics: Frontiers and New Applications, Volume 2.
Name of conference
13th International Conference of the International Association for Computer Methods and Advances in Geomechanics (IACMAG2011)
Location
Melbourne
Start date
2011-05-09
End date
2011-05-11
Pagination
1054-1059
Publisher
University of New South Wales (UNSW), Centre for Infrastructure Engineering and Safety (CIES)