Author(s)

Wang Bo

Corresponding Author

Wang Bo

Abstract

In view of the fact that there is a blank belt in the 11014 mining face of Yusha Coal Mine in Guizhou, which is not controlled by pre-drilling, the hydraulic fracturing and anti-pressure technology is used to carry out gas drainage in the 11014 mining face. Field tests were carried out by designing a reasonable hydraulic fracturing borehole and selecting suitable fracturing equipment. After the implementation of this technology, the single-hole extraction concentration of the 11014 mining surface is more than 30%, and the pure flow rate is increased by 17% compared with the fracturing. This effectively solves the difficult problem of eliminating the quasi-reaching standard and it ensures the safe and efficient mining of coal mines.

Keywords

Coal Mine, Mining Face, Hydraulic Fracturing, Extraction, Enhanced