Quantifying effect of concurrent draw on extraction zones in block caving mines using large scale 3D physical model

Halim, A., Trueman, R. and Castro, R. (2008) Quantifying effect of concurrent draw on extraction zones in block caving mines using large scale 3D physical model. Transactions of the Institutions of Mining and Metallurgy, Section A: Mining Technology, 117 3: 128-135. doi:10.1179/037178409X405723


Author Halim, A.
Trueman, R.
Castro, R.
Title Quantifying effect of concurrent draw on extraction zones in block caving mines using large scale 3D physical model
Journal name Transactions of the Institutions of Mining and Metallurgy, Section A: Mining Technology   Check publisher's open access policy
ISSN 0371-7844
1474-9009
1743-2863
Publication date 2008
Year available 2008
Sub-type Article (original research)
DOI 10.1179/037178409X405723
Open Access Status
Volume 117
Issue 3
Start page 128
End page 135
Total pages 8
Place of publication Leeds, W Yorks, United Kingdom
Publisher Maney Publishing
Collection year 2009
Language eng
Subject 1909 Geotechnical Engineering and Engineering Geology
1907 Geology
Abstract There remains a debate within the literature and among practitioners of caving methods as to the effect on draw zone geometry for the concurrent drawing of multiple drawpoints. Concurrent draw refers to an extraction schedule where a limited amount of material is drawn from each drawpoint before moving to the next drawpoint to draw the same amount. One hypothesis concludes that the flow geometries of a single drawpoint increase while another assumes no change from that of isolated draw. The largest 3D physical model constructed using gravel as the model media has been used to further investigate interactive draw of extraction zones as part of an International Caving Study (ICS) and Mass Mining Technology Project supported by major international companies with interest in caving methods. All extraction zones were measured in 3D. To date a maximum of 10 drawpoints have been modelled. Model results so far indicate no growth in the horizontal width of extraction zones using concurrent draw. Experiments conducted with multiple drawpoints that were spaced less than the width of isolated extraction zones showed that the combined horizontal area of draw appears to reduce with the increasing overlap of isolated extraction zones. The horizontal widths of extraction zones continued to increase within the height of the draw tested.
Keyword Block caving
Granular materials
Gravity flow
Multiple drawpoints interaction
Physical modelling
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Sustainable Minerals Institute Publications
 
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