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Application of Medium Pressure Air Drilling Technology in Pingdingshan Coalmine
详细信息   
摘要
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 results showed that the medium pressure air drilling technology is worth popularizing in soft and outburst coal seam drilling. 

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