...1 INTRODUCTION The sublevel stoping method with delayed backfill is one of the most popular mining methods in Cana- dian underground metal mines. In this method, as more ore is blasted and drawn from the stope, there is less rock mass to support the stope walls and hence there is the risk...

... of unconsolidated backfill used to fill the mined stope above it that results upon undermining the sill mat below. The resisting forces are largely governed by the strength properties of the cemented sill mat. This paper presents stability charts derived using numerical codes incorporating variable stope dip angles...

... ABSTRACT ABSTRACT: Common back analysis techniques, such as empirical stability graph methods, are limited in their ability to identify and quantify the relative contributions of the various factors that influence excavation performance. A comprehensive back analysis of existing stoping...

... Reservoir Characterization stope reservoir geomechanics transverse section time step elastic-viscoplastic model correlation safety factor machine learning Upstream Oil & Gas vertical section time-dependent displacement crosscut instrumentation actual reading scale factor...

...1 INTRODUCTION The Porcupine gold mining camp, located in Tim- mins, Ontario has been in continuous production since 1910. Over that period, approximately 65 mil- lion ounces of gold have been produced by more than fifty mining operations. Most of the under- ground stoping in the upper levels...

... reservoir geomechanics metals & mining knowledge management Wellbore Design Reservoir Characterization structural geology alteration stope dilution stability number University Upstream Oil & Gas calculation reduction factor rock mass factor overcut stope design dilution...

...1 INTRODUCTION Xstrata s Kidd Mine currently produces from some of the deepest blasthole stopes in the world, where little or no empirical geomechanical design data ex- ist. In this technically challenging situation, a reli- able stope design methodology with the capability to mitigate risk...