Sensitivity Analysis of Ventilation Models - Where Not To Trust your stimulation


Craig Stewart, Howden Simsmart; Martin Griffith, Howden Simsmart

Ventilation models are a vital tool to ensure ventilation designs can provide airflow to all work areas in a mine.  Airway resistance and variations in natural ventilation pressures will affect simulated airflow and heat distribution through a mine.  Validating ventilation model resistances and pressures to the exact underground conditions can be difficult and the variances can contribute to significantly different simulation results  depending on the structure of the ventilation design.  The study will use sensitivity analysis to explore examples of variability of simulated airflow due to small resistance, heat and natural ventilation changes and thereby help the user identify both trustworthy and potentially unreliable parts of a mine ventilation model.