Abstract: In order to make all the indexes of the ventilation system meet the requirements of “the metal non-metal mines safety regulation”,the design work of the improvement of a non-ferrous metal mine ventilation system is carried out from the perspective of the selection of the ventilating shaft and ventilation pattern,the calculation of the mine air and air pressure,the choice of model of the main fan and motor.According to the designing scheme,the air volume and air pressure can be adjusted by the ventilation structure and the short circuit and air leakage are controlled effectively.Therefore,the designing scheme of this paper can provide some reference for the ventilation system optimization improvement of some similar mines.

Key words: Ventilation of mines, Calculation of air volume, Selection of equipment model, System improvement