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.