Stope stability analysis in room-and-pillar mining method using cemented paste backfill

Abstract

Significant economic and environmental advantages can be expected using cemented paste, especially in mining as a backfill for room-and-pillar excavated method. But, it is necessary to investigate the behaviour of cemented paste backfill within mine stope. In this paper will be presented results of stress-strain analysis of stope stability in room-and-pillar excavation method, before and after backfilling with cemented paste on a model developed in a plane (2D) with corresponding boundary conditions. This model was developed in order to analyze stress-strain stability of the room-and-pillar system in excavating block with included loading and drilling corridors. Model was analyzed before and after backfilling. This excavation method will be applied in "Borska Reka" mine, Bor, Serbia.

Keywords

• cemented paste
• backfill
• room-and-pillar method
• stope stability analysis