Abstract: Due to the influence of goaf air leakage of Yindongpo Gold Mine,the ventilation system stability is not reliable,therefore,the main surface fan of the east air shaft cannot effectively play the role of total return air of the ventilation system,the operation air flow direction is reversed,the heat dissipation of air compressor chamber in the middle production section results in local high temperature,the underground hot air and waste air cannot be discharged to the surface along the setting route.In order to solve the above problems in the ventilation system,based on the integrated optimization techniques of multiple station air pressure balance,optimum design of machine station and fan selection,the problems such as a large quantity of air leakage in goaf,Xiaogaojian shaft ventilation and production sections polluted by the heat source of underground air compressor chamber are solved effectively.

Key words: Mine ventilation, Air leakage in goaf, High temperature chamber, Air pressure balance, Optimization of machine station