Materials properties of barricade bricks for mining applications

Berndt, Christopher C., Rankine, Kirralee J., and Sivakugan, Nagaratnam (2007) Materials properties of barricade bricks for mining applications. Geotechnical and Geological Engineering, 25 (4). pp. 449-471.

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Barricade bricks are fundamental to the safe operation of a mining site. Past failures have lead to loss of life and reduced mine efficiency or even shut down. The fundamental material property that determines the operational characteristics of barricade bricks is their permeability, which must be tailored to suit the operational environment of the mine. The ability of the barricade to control the hydraulic pressure within a stope application is crucial for safety and economic returns. In the current work practical barricade bricks were tested for permeability. As well, the strength and modulus of bricks were measured after being soaked in water for either 7 or 90 days so that a measure of their engineering functionality could be determined. The primary conclusions of this work are as follows. There was substantial deviation in permeability between bricks; however, the average permeability of the barricade bricks was several orders of magnitude larger than the values obtained for the hydraulic fill. This difference indicates that modelling efforts can assume that the barricade does not contribute to the pore pressure development within the fill. Hence the drainage of the system is not related to the permeability of these bricks provided that the barricades are built from the bricks in such a way that the construction or future migration of fines from the fill does not impede the drainage performance.

Item ID: 2842
Item Type: Article (Research - C1)
ISSN: 1573-1529
Keywords: barricade bricks; backfill; drainage; permeability; minefills; mine bricks
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Date Deposited: 24 Sep 2009 22:34
FoR Codes: 09 ENGINEERING > 0905 Civil Engineering > 090599 Civil Engineering not elsewhere classified @ 50%
09 ENGINEERING > 0999 Other Engineering > 099999 Engineering not elsewhere classified @ 50%
SEO Codes: 84 MINERAL RESOURCES (excl. Energy Resources) > 8499 Other Mineral Resources (excl. Energy Resources) > 849999 Mineral Resources (excl. Energy Resources) not elsewhere classified @ 100%
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