Abstract: Aiming at the problems of ventilation in Luoshan Gold Mine,such as lack of total air volume,insufficient return air capacity of the system,low operation performance of the main return fan station and series connection of polluted air,two kinds of technical renovation schemes are designed by using ventilation network optimization technology,station optimization technology and ventilation simulation technology.Through technical and economic analysis and comparison,the optimization scheme that utilizing the existing intake shaft engineering as the system air passage,the newly excavated east air shaft and west air shaft engineering as the system air return passage,the air flow rate of the mine can be improved effectively,the effectively air volume rate of the mine is increased,besides that the above scheme has the advantages of simple ventilation mode,good air flow stability and low energy consumption of ventilation operation.After the implementation of the scheme,the total air volume of the mine reaches 189.01 m3/s,the operation efficiency of the main fan of the system reaches 80.5%,and the underground ventilation conditions are obviously improved.

Key words: Series connection of polluted air,Wind short circuit,Network optimization,Station optimization,Simulation