Estimation of dynamic load demand on a ground support scheme due to a large structurally controlled violent failure – a case study
MetadataShow full item record
© 2015 Institute of Materials, Minerals and Mining and The AusIMM Published by Maney on behalf of the Institute and The AusIMM. In the future a larger proportion of underground mines will operate in deep, high stress environments where excavations may be exposed to very high loading demands. This case study has examined a violent structurally controlled failure occurring in a deep hardrock underground mine at a depth of 1055 metres below surface. On the basis of the damage observations the back analysis of this event concludes that the surface support system was ejected from the wall of the excavation with an initial velocity of 10.7 m s-1. Estimates of the mechanical demand imparted to the ground support scheme during failure were also calculated. These estimates carry several assumptions in order to simplify complex uncertainties concerning the loading mass of rock and transfer of kinetic energy between the rock and ground support. However, the demand may be conservatively assumed to be at least 150 kJ m-2. These results may reflect future mining conditions at great depth.
This is an Author's Original Manuscript of an article published by Taylor & Francis in Mining Technology on 09/12/2015 available online at <a href="http://www.tandfonline.com/10.1179/1743286315Y.0000000029">http://www.tandfonline.com/10.1179/1743286315Y.0000000029</a>
Showing items related by title, author, creator and subject.
Besa, Bunda (2010)The decline is a major excavation in metalliferous mining since it provides the main means of access to the underground and serves as a haulage route for underground trucks. However, conventional mining of the decline to ...
Sonter, L.; Barrett, D.; Soares-Filho, B.; Moran, Chris (2014)Global demand for minerals is often considered an insignificant driver of land-use change because mines are small. We (1) investigated evidence supporting a link between global demand for steel and land-use change in ...
Developing completion criteria for rehabilitation areas on arid and semi-arid mine sites in Western AustraliaBrearley, Darren (2003)Continued expansion of the gold and nickel mining industry in Western Australia during recent years has led to disturbance of larger areas and the generation of increasing volumes of waste rock. Mine operators are obligated ...