Consolidation behavior of hydraulic fills

Singh, Shailesh, and Sivakugan, Nagaratnam (2007) Consolidation behavior of hydraulic fills. In: Common Ground. Proceedings of the 10th Australia New Zealand Conference on Geomechanics (2), pp. 162-167. From: 10th Australia New Zealand Conference on Geomechanics, 21-24 Oct 2007, Brisbane, QLD, Australia.

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Abstract

The backfilling of mines provide safe working conditions and increases the strength of the nearby ground. The hydraulic backfill is one of the most popular backfills used in mines. These consist of classified mine tailing with not more than 10% by weight of size less than 10 I-lm, with approximately 70% by weight of solid content. The anecdotal evidence suggests that the consolidation of the deslimed hydraulic fill is instantaneous (Thomas et al. 1979, Clark 1988). All current computer programs (Isaac 8: Carter 1983, Traves 8: Isaac 1991, Rankine 2005 ) used for simulating the hydraulic fills to study the drainage behavior assumed that the hydraulic fill settles instantaneously and are based on uncoupled analysis. The objective of this paper is to study the consolidation behavior of hydraulic fills experimentally and to check the validity of this assumption. The consolidation behavior of mine tailings is different from the sand and clays. Laboratory tests have been carried out in James Cook University laboratory to measure the time dependent settlement in hydraulic fills, due to consolidation and creep. It has been found that the time dependent settlement and immediate settlement contributes equally to the settlement. The results of tests are presented and discussed in this paper.

Item ID: 3044
Item Type: Conference Item (Refereed Research Paper - E1)
Keywords: hydraulic fill; consolidation; settlements; minefills; creep; secondary compressions
Additional Information:

ISBN: 978-0-646-47974-3
Date Deposited: 08 Oct 2009 05:25
FoR Codes: 09 ENGINEERING > 0999 Other Engineering > 099999 Engineering not elsewhere classified @ 100%
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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