The problems associated with underground mining continue to grow in
size and complexity. As a result mine management is becoming aware of
the benefits that can be achieved through the use of computer-oriented
tools for system analysis. When such tools are employed in conjunction
with benchmarking practices, the drivers of the system that lead to
superior performance can more easily be determined. This paper discusses
the use of the Simulation Language for Alternative Modelling (SLAM II)
in the determination of the drivers of an underground room-and-pillar
mining system. The mining operations included in the model consist of
extracting, loading and hauling of the coal using continuous mining
equipment in a room and pillar system. Equipment specifications and
mining techniques used in the model are based upon current methods
employed at the existing underground coal mines worldwide. The model
developed is capable of adequately predicting the operational
performance of the real world system from a statistical point of view. The
results from the study show that computer simulation is an excellent tool
for evaluating various mine configurations and for gaining a better
understanding of the mining systems.