Potential use of high-density backfill in Illinois Basin room-and-pillar coal mines
|dc.identifier.citation||Spearing, S. and Benton, D. and Kostecki, T. and Hirschi, J. 2014. Potential use of high-density backfill in Illinois Basin room-and-pillar coal mines. Transactions of Society for Mining, Metallurgy, and Exploration. 336 (1): pp. 396-401.|
The use of paste backfill in room-and-pillar coal mines in the United States needs to be fully investigated. This paper discusses a series of physical tests that were conducted to examine the support benefits of theoretical paste backfill regimens in Illinois Basin room-and-pillar coal mines, which necessarily included consideration of weak floor conditions. The series of tests included those simulating strong floor conditions, weak floor conditions, under-confined scenarios, and testing of actual coal-based paste backfill samples. The testing indicated that a paste backfill regimen utilizing a minimum backfill strength of 22 psi at a minimum fill height of 50% of pillar height could significantly increase the longterm stability of coal pillars in the Illinois Basin. Considering typical coal wash plant recoveries, 50% fill would be feasible.
|dc.publisher||Society for Mining, Metallurgy and Exploration|
|dc.title||Potential use of high-density backfill in Illinois Basin room-and-pillar coal mines|
|dcterms.source.title||Transactions of Society for Mining, Metallurgy, and Exploration|
|curtin.department||Western Australian School of Mines|
|curtin.accessStatus||Fulltext not available|
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