Stability Analysis of Paste Fill as Stope Wall using Analytical Method and Numerical Modeling in TheKencana Underground Gold Mining with Long Hole Stope Method

The stability of the stope opening is a factor that greatly determines succesfull operation of an underground mining. In order to be a safe mining method by using paste fill, it is necessary to do a research on the stability of paste fill which is used to fi ll the mining stope. The study was conducted based on the analytical method and numerical modeling. The limit equili brium method was used to analysis the stability of paste fill considering the acting forces and mechanical strength of paste fill, for num erical modeling was used distinct element method with the program of 3DEC version 4.00 from Itasca, used to displacement analysis of paste fill that can be slided and collapsed by using the rigid and deformeable analysis. The stability analysis of paste fill was perform to ensure safety of mining activities in Kencana underground gold mine.