Hydraulic Flushing Process System and Its Parameters Investigation in Pingbao Company

Aiming at the situations of high gas pressure and content, soft coal body, low permeability as well as serious borehole outburst and nonideal gas drainage effect in cross-seam drillings of Pingbao Company Ⅱ_1-2coal seam, the paper has been investigated suitable technological process and parameters for this mine based on theory analysis, on-site experiment of hydraulic flushing in borehole.