2011121&ensp·&enspThe South African Institute of Mining and Metallurgy RISE OF THE While the majority of South African backfill operations utilise uncemented classified tailings, many North American, European and Australian operations have opted for The paste from Mines A and B have similar slumps and similar pressure gradients, although it could be
Abstract large volumes of coal combustion residues ccrs are produced via coalfired power stations.A proposed high disposal solution is to backfill opencast coal mines with ccr monoliths. south african studies have focused on the hydraulic behaviour of ccrs in this application, leading to uncertainty in understanding environmental impacts.
Backfill systems have been developed which can simultaneously fulfill the requirements of both regional and local support. Theoretical studies show that backfill alone can act as the regional support at depths of less than 3 km. Below 3 km the major benefits of backfill are to reduce the stresses acting on stabilizing pillars or to enable an increase in the span between the pillars.
198811&ensp·&enspThere are now some twenty mines using backfill in South Africa and various systems have been documented [I4]. The number of backfill plants in operation is likely to increase considerably over the next few years. The major benefits from using backfill in the narrow tabular orebodies typical of the Witwatersrand were summarised by Stewart et al .
Backfill in South African Mines Special publications series: Contributors: Association of Mine Managers of South Africa, South African Institute of Mining and Metallurgy: Publisher: South African Institute of Mining and Metallurgy, 1988: Original from: the University of California: Digitized: Apr 13, 2007: ISBN: 0620117885, 9780620117883: Length: 635 pages : Export Citation
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2009827&ensp·&enspReturning to backfill, in 1992, Western Deep Levels South experienced unparalled levels of seismicity and consequent serious and fatal injury. Great effort was put into introducing cemented backfill, only two metres from the working face (Macfarlane1995). Eventually these efforts met with significant resistance from the workforce, who felt on
2014128&ensp·&enspProvince in South Africa and forms part of the North Western Limb of the Bushveld Igneous Complex. Due to poor ground conditions, cemented backfill is considered to maintain an acceptable extraction rate. The scope of work included the design of a modular backfill plant and infrastructure, capable of supplying one mining