dc.contributor.author |
Cumming-Potvin, D.
|
|
dc.contributor.author |
Wesseloo, J.
|
|
dc.contributor.author |
Jacobsz, Schalk Willem
|
|
dc.contributor.author |
Kearsley, Elsabe P.
|
|
dc.date.accessioned |
2017-06-22T06:31:40Z |
|
dc.date.available |
2017-06-22T06:31:40Z |
|
dc.date.issued |
2016-08 |
|
dc.description.abstract |
The Duplancic model of caving is widely accepted in industry and is the
framework within which most monitoring and numerical modelling results
in caving mines are interpreted. As a result, the damage profile ahead of
the cave back is often interpreted as continuously decreasing damage with
increasing distance ahead of the cave back. Physical modelling of the
caving process performed in a centrifuge did not support this expected
behaviour, but instead suggested a discontinuous damage profile ahead of
the cave caused by fracture banding. Some support is found in the
literature to suggest that the behaviour observed in the models may also
be present in the field. This notion is further supported by banding
behaviour observed from microseismic monitoring at two block cave
mines. Combining the information from the physical models, field
observations referred to in the literature, and the microseismic analyses, it
is concluded that the Duplancic model needs to be extended to include the
phenomenon of fracture banding. It is also reasonable to expect that
fracture banding may play a more important role in the caving process
than has previously been recognized. |
en_ZA |
dc.description.department |
Civil Engineering |
en_ZA |
dc.description.librarian |
am2017 |
en_ZA |
dc.description.uri |
http://www.saimm.co.za/journal-papers |
en_ZA |
dc.identifier.citation |
Cumming-Potvin, D, Wesseloo, J, Jacobsz, SW & Kearsley, E 2016, 'Fracture banding in caving mines', Journal of the Southern African Institute of Mining and Metallurgy, vol. 116, pp. 753-761. |
en_ZA |
dc.identifier.issn |
0038-223X (print) |
|
dc.identifier.issn |
2225-6253 (online) |
|
dc.identifier.other |
10.17159/2411-9717/2016/v116n8a7 |
|
dc.identifier.uri |
http://hdl.handle.net/2263/61064 |
|
dc.language.iso |
en |
en_ZA |
dc.publisher |
Southern African Institute of Mining and Metallurgy |
en_ZA |
dc.rights |
© The Southern African Institute of Mining and
Metallurgy |
en_ZA |
dc.subject |
Block caving |
en_ZA |
dc.subject |
Caving mechanics |
en_ZA |
dc.subject |
Fracture banding |
en_ZA |
dc.subject |
Extensional fracturing |
en_ZA |
dc.subject |
Centrifuge |
en_ZA |
dc.subject |
Physical modelling |
en_ZA |
dc.subject.other |
Engineering, built environment and information technology articles SDG-12 |
|
dc.subject.other |
SDG-12: Responsible consumption and production |
|
dc.title |
Fracture banding in caving mines |
en_ZA |
dc.type |
Article |
en_ZA |