“MINE VENTILATION CIRCUITS IN AN UNDERGROUND MINE OF NORTHERN ITALY”

This dissertation is conducted to find an optimized and comprehensive ventilation system solution for the Murisengo Chalk Mine in the north of Italy. First, we discussed the history of ventilation and different methods have used for this purpose passing times and fundamentals of ventilation have been discussed. Then it’s deliberated why we need ventilation and what are the advantages and benefits of a practical ventilation system. In the third chapter, the common ventilation circuits that are employed currently worldwide are discussed and different designs and schemes related to the specifications of various projects are debated in this section. In the consecutive chapter, different devices used for ventilation purposes have been argued such as different types of fans, air doors, airlocks, regulators, … Then the geological and hydrogeological features of the Murisengo mine have been analyzed. After that other characteristics and properties of the Murisengo mine and machines that are present in the mine have been debated. Subsequently, the calculations and methods that we used are written and discussed. Finally, two optimized solutions for the ventilation system of Murisengo mine have been designed in order to reach the best ventilation with the lowest cost to reach the best economical and practical design as efficient as possible. This model has been planned with Ventsim design software. Moreover, we have discussed about an event of a fire in different locations of the mine in order to see what are the conditions in different airways of the mine in a case of fire. At the end, some important ideas and suggestions have been argued for further improvement in the future.