Determination of Distance Required to Ensure Stope and Footwall-drift Non-interaction Zone based on Geological Strength Index

Abstract

In the Bakibaba Copper Mine, the longhole stoping method is used in the production of copper ore. Stability problems have occurred at times on the footwall drift due to the interaction between the footwall drift and stope. In this study, we propose a method for estimating the minimum distance necessary to ensure a non-interaction zone between the footwall drift and stope. We used the finite element method and various distances between the footwall drift and stope and the displacements over drifts as parameters. We also performed analyses on various geological strength index values from low to high to determine the effect of the rock mass on the interaction between the footwall drift and stope

Study and evaluation of the stability of underground mining method used in shallow-dip vein deposits hosted in poor quality rock

“…Analysis of the stability of mining excavation by numerical modeling is commonly used in the mining industry [24], [42]- [45]. In this analysis, we used the RS2 software developed by RocScience Inc. [46] to analyze the displacements and the safety factor (SF) around the excavation generated by the overhand cut and wire operating method chosen as the extraction method optimal for exploiting shallow-dip vein deposits hosted in poor quality rocks.…”

“…This stability analysis proposes solutions to prevent rockfalls, one of the most severe security problems in the mining industry. These rockfalls linked to the intersection of the gallery surface and existing discontinuities in the rock mass [19], the state of the stresses (in situ stresses, and the stresses induced by the excavation of gallery) [20], [21], the convergence of land following the increase in depth [22], [23] and the interference between excavations [24].…”