Underground Mine Backfilling in Australia Using Paste Fills and Hydraulic Fills

Sivakugan, Nagaratnam; Veenstra, Ryan; Niroshan, Naguleswaran

doi:10.1007/s40891-015-0020-8

Cited by 58 publications

(25 citation statements)

References 5 publications

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“…This binder was selected for its early strength development, which is desirable for backfilling in the permafrost. Considering that mines are using fly ash and slag to partially replace cement with blended cements [5,17,[31][32][33], the second binder agent was, a blend of 80% ground granular blast furnace slag and 20% Type I Portland cement, or general use (GU) (CP I) cement. This blend (hereinafter S-GU) is most often used for mine backfilling due to its advantages in terms of increased strength compared to GU cement alone (e.g., [5,32]).…”

Section: Characteristic Of Tailings Binder and Mixing Watermentioning

confidence: 99%

Mine Backfilling in the Permafrost, Part II: Effect of Declining Curing Temperature on the Short-Term Unconfined Compressive Strength of Cemented Paste Backfills

2019

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When cemented paste backfill (CPB) is used to fill underground stopes opened in permafrost, depending on the distance from the permafrost wall, the curing temperature within the CPB matrix decreases progressively over time until equilibrium with the permafrost is reached (after several years). In this study, the influence of declining curing temperature (above freezing temperature) on the evolution of the unconfined compressive strength (UCS) of CPB over 28 days’ curing is investigated. CPB mixtures were prepared with a high early (HE) cement and a blend of 80% slag and 20% General Use cement (S-GU) at 5% and 3% contents and cured at room temperature in a humidity chamber and under decreasing temperatures in a temperature-controlled chamber. Results indicate that UCS is higher for CPB cured at room temperature than under declining temperatures. UCS increases progressively from the stope wall toward the inside of the CPB mass. Under declines in curing temperature, HE cement provides better short-term compressive strength than does S-GU binder. In addition, the gradual decline in temperature does not appear to affect the fact that the higher the binder proportion, the greater the strength development. Therefore, UCS is higher for samples prepared with 5% than 3% HE cement. Findings are discussed in terms of practical applications.

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Section: Characteristic Of Tailings Binder and Mixing Watermentioning

confidence: 99%

Mine Backfilling in the Permafrost, Part II: Effect of Declining Curing Temperature on the Short-Term Unconfined Compressive Strength of Cemented Paste Backfills

2019

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“…These cemented backfills include paste fill, cemented hydraulic fill, cemented aggregate fill and cemented rock fill. Uncemented paste fill is not used in an underground mining operations (Naguleswaran, 2018;Sivakugan et al, 2015).…”

Section: Backfill Materialsmentioning

confidence: 99%

“…Ordinary portland cement is usually used as binder, but cement adds significant cost to the backfill even in small dosages (3-6%), there is a recent trend to use blended cement (Naguleswaran, 2018;Sivakugan et al, 2015).…”

Section: Backfill Materialsmentioning

confidence: 99%

Paste backfill materials for underground mining: Some experiences in Serbia: Part I

Kostović

2019

Podzemni radovi

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This review paper presents the backfill method and materials for paste backfill mathod which are used in the world practice of underground mining. The paper consists of two parts. The first part (Part I) provides a brief literature review concerning the presentation of the backfill method, mostly the paste backfill method, its application, advantages and disadvantages, and materials that can be used to form a paste. The second part (Part II) of the paper presents an overview of possible materials that could be used for the eventual application of this method in Serbia. According to available data, backfill method has not been applied in practice in Serbia today, but mostly laboratory tests have been carried out.

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“…CPB is made from tailings that are mixed with a binding agent and water, and it has the consistency of a fine slurry [5]. Typically, CPB contains about 75% -85% by weight tailings, around 3% -6% by weight cement and water to form a dense, pumpable mix.…”

Section: Materials Requirementsmentioning

confidence: 99%

“…One of these methods uses cemented paste backfill (CPB), which has gained worldwide acceptance due to its economic and environmental benefits [5]. CPB is a heterogeneous material made of tailings, water and a hydraulic binder.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Effect of Different Cementing Materials on the Strength of Cemented Paste Backfill

Ionescu¹,

Petrolito²,

Dare³

et al. 2017

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Abstract. The extraction and use of mineral resources are critical to modern societies. New technologies and practices have ensured the development of the mining industry. Currently, the industry is striving to become more efficient and more environmentally-friendly. This paper reports on continuing research at La Trobe University on the behaviour of cemented paste obtained from fine, sulphide-rich gold tailings from the local Fosterville Mine. The effects of cementitious binders and the age of the hardened cemented paste on the mechanical properties are presented. The findings to date show that there is potential to replace the current backfill material with cemented paste backfill to increase mine productivity and ore profitability.

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Underground Mine Backfilling in Australia Using Paste Fills and Hydraulic Fills

Cited by 58 publications

References 5 publications

Mine Backfilling in the Permafrost, Part II: Effect of Declining Curing Temperature on the Short-Term Unconfined Compressive Strength of Cemented Paste Backfills

Mine Backfilling in the Permafrost, Part II: Effect of Declining Curing Temperature on the Short-Term Unconfined Compressive Strength of Cemented Paste Backfills

Paste backfill materials for underground mining: Some experiences in Serbia: Part I

Assessment of the Effect of Different Cementing Materials on the Strength of Cemented Paste Backfill

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