Test and analysis for ventilation system of Hongtoushan underground mine

For Hongtoushan underground mine with long history, it is important to master the actual state of complex ventilation system for simulating and optimizing. In this paper, the parameters of ventilation system are tested. The results show the volume in different level are quite different, from 6.78—17.78m3/s, the function of fan at upper position is not obvious, and there are air leakage at the upper mined-out area.