Geotechnical properties of cemented paste backfill from Cannington Mine,Australia |
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Authors: | Rudd M Rankine Nagaratnam Sivakugan |
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Institution: | (1) Department of Civil & Environmental Engineering, School of Engineering, James Cook University, Townsville, Queensland, 4811, Australia |
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Abstract: | Paste fill is the newest form of backfill material in the spectrum available to international mines and is made from full
mill tailings. Tailings have an effective grain size of approximately 5 μm and are combined with a small portion of binder
and water to make paste. It is deposited into the voids created by mining which are referred to as stopes. The empty voids
are approximated as vertical rectangular prisms, with plan dimensions of 15–40 m and heights of 100 m or more. Backfilling
of mined stopes provide an increased level of local and regional stability to the ore body, as well as providing a suitable
and economic dump of mining related waste. Paste is a relatively new technology in the mining industry and a review of the
physical properties and mechanical fill behaviour was considered pertinent. |
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Keywords: | Backfill Cemented fill Geotechnical characterization Laboratory testing Paste |
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