Dimensionless percolation rate of particles in block caving mines

Hashim, M. H. M. and Sharrock, G. B. (2012). Dimensionless percolation rate of particles in block caving mines. In: MassMIN 2012 Conference Proceedings. MassMin 2012: 6th International Conference and Exhibition on Mass Mining, Sudbury, Ontario, Canada, (). 10-14 June 2012.

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Author Hashim, M. H. M.
Sharrock, G. B.
Title of paper Dimensionless percolation rate of particles in block caving mines
Conference name MassMin 2012: 6th International Conference and Exhibition on Mass Mining
Conference location Sudbury, Ontario, Canada
Conference dates 10-14 June 2012
Proceedings title MassMIN 2012 Conference Proceedings
Place of Publication Westmount, QC, Canada
Publisher Canadian Institute of Mining, Metallurgy and Petroleum
Publication Year 2012
Sub-type Fully published paper
Total pages 10
Collection year 2013
Language eng
Abstract/Summary Knowledge of particle percolation impacts on both the economics and safety of cave mining operations. Nevertheless, very little research has focused on particle percolation in block or sub-level caving mines. Percolation of fine particles occurs when mixtures of particles with different sizes are simultaneously exposed to shearing and/or volumetric deformations and gravitational forces. This results in the fine particles traveling through the bed of coarse particles. The aim of this paper is to study the percolation of fine particles in highly angular particle assemblies similar to caved rock fragments using physical models called the Shear Cell for Percolation of Geomaterials (SCPG). Percolation tests were carried out for ideal media consisting of steel spheres (4.00 mm), glass spheres (4.00, 5.00, 6.00, 15.75 mm) and plastic spheres (4.00 mm) and highly angular crushed basalt aggregate (2.86, 4.05, 5.21, 6.18, 13.20 mm). Basalt aggregate more closely resembles real caved rock than the mono-size spherical particles (e.g., glass spheres) used by previous researchers. Key combinations of fine and bed-matrix particles were tested to quantify the effect of strain rate, particle diameter ratio, density and shape. To explore the mechanisms controlling percolation across the range of tested particle shapes and sizes, a dimensionless percolation rate (DPR) relation was derived using the method of Bridgwater et al. (1978).
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes Paper 6806

Document type: Conference Paper
Collections: W.H. Bryan Mining Geology Research Centre
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Created: Wed, 24 Apr 2013, 09:09:08 EST by Christopher O'Keefe on behalf of WH Bryan Mining and Geology Centre