Hydraulic Pressure Fracturing and Permeability Improving Technology Applied to Gas Pre-Drainage of Seam Opening in Mine Crosscut
WANG Rong-chao
Abstract：In order to improve the gas drainage effect of the soft and outburst seam ,with the analysis on the outburst elimination mechanism with the seam fracturing and permeability improving by the hy-draulic pressure fracturing ,in the seam opening working face in the crosscut of Fengchun Mine ,the high pressure hydraulic fracturing and permeability improving technology was applied to the hydraulic fracturing and permeability improvement .After the gas pre-drainage of the seam conducted ,the seam opening was made .After the hydraulic pressure fracturing and permeability improving ,the gas drai-nage effect was highly improved and the pre-drainage target time was reduced by 220 days .During the seam opening process ,the outburst predicted index was obviously reduced and there was no overlimit phenomenon of the prediction occurred .The seam opening period was reduced by 40% and the seam opening construction efficiency in the mine crosscut w as improved .
Keywords：hydraulic pressure fracturinggas drainageseam opening in mine crosscutoutburst danger
Publication Date：2015-07-02
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 15-18 )