Stability Analysis of a Cemented Rockfill Pillar

摘要

The survival of many mines depends on their capability to maximize productivitywhile minimizing operating costs. The costs associated with cemented backfilling are best reduced by the optimization of mix design and thorough dimensioning. For environmental reasons, the demands of disposing of mine tailings to the underground excavations has grown significantly. The underground disposal of tailing requires considerable knowledge about rock mechanical behavior of backfill and the surrounding rock mass in order to get satisfactory results. In this project several laboratory tests were performed in order to study the effect of curing time, binder and activator content on the strength and deformability of cemented backfill and cemented rockfill. The specimens were prepared by both molding and coring and the diameter of specimens varied from 32 mm to 300 mm.