Tóm tắt:

Mine ventilation purposes diluent and taken out of the pit of harmful gases released during the mining process and ensure the conditions suitable microclimate in the work place. Currently, in the underground coal mines in general and in particular Lộ Trí mine is in the process of moving deep exploitation, ensure ventilation requirements should be given special' attention and become important tasks in ,the work ensure safety and response plans to increase coal production. From research results, the calculation of the fan air flow needs to be made to meet the ventilation requirements of the mine, and based on the fan working capacity, the article has determined the proper working mode of the main fan of Lộ Trí coal mine, Thống Nhất coal company.