Tóm tắt:

This paper presents the characteristics of the mechanized longvvall in Hà Lầm coal mine. On the other hand, at the transport pits, the ventilation of the mechanized longwall also generates dust from the transport equipment against the wind direction and the difference at the transíer points (coal pouring) causing dust generation. In order to reduce the concentration of primary and secondary dust, the paper proposes some solụtions applied to the mechanized [ongvvall ồf Hà Lầm coal mine and has been effectỉve in reducing dust concentration.