Abstract: The deep mining engineering is constructed and it is put into production, the ventilation system of deep mining is interacting with the original ventilation system, which results in ventilation short circuit, and with the mining sections moving down, the ventilation of the working face of mining sections is more and more difficult, the ventilation management difficulty is increased. Based on the actual investigation results of the ventilation system of Tonglushan mine, the main problems existed in the mine is analyzed, and some practical ventilation schemes is proposed. By ventilation scheme comparison, the unite ventilation scheme is selected. The optimal ventilation schemes of the three relatively independent ventilation unites formed based on the orebody distribution characteristics. The results show that, the ventilation system short circuit of the mine is solved, besides that, the air volume of the underground mining stope is guaranteed, which can provide some reliable reference for the improvement of ventilation system of the similar mines.

Key words: Tonglushan mine, Ventilation system, Ventilation unit, Coupled optimization