Application of Medium Pressure Air Drilling Technology in Pingdingshan Coalmine

Abstract:

Drilling in soft and outburst coal seam, the medium pressure air drilling has obvious advantages in technology and supporting equipment. Through the application of this technology in Pingdingshan coalmine, borehole without enough depth, borehole accident prevention and accident treatment difficulties were effectively resolved. The practice showed that the medium pressure air drilling technology is worth popularizing in soft and outburst coal seam drilling.

Key words:soft and outburst coal seam; medium air pressure; air drilling; borehole depth; accident in borehole