ABSTRACT
Mine ventilation planning is an important part of the overall mine planning process. Computer simulation of ventilation networks has been one of the earliest applications of computer technology into mine planning. Since then computer assisted ventilation planning has become a routine practice in all underground mines used mainly in evaluating various alternatives in mine ventilation (Hartman, 1997 and Fytas et al, 1997). Eolaval, since its initial conception fifteen years ago, has been a very useful ventilation planning tool in Quebec mines. Its initial DOS version has been in use by the Quebec underground mines since 1988 (Fytas et al, 1995). The Windows version of Eolaval written in 1996 was coded using Basic and Visual Basic. That was satisfying at that time, since no heavy graphical manipulation had to be accomplished. This new version of Eolaval (Fytas et al, 2000) has been completely re-coded using C++ and an object-oriented approach since we wanted to gain speed in both graphical display and simulation.
