New Gas Drainage Technology of Single Outburst Seam in Pingdingshan Mining Area
Abstract：The paper introduced the gas deposit law and the gas drainage technical system of Pingdingshan Mining Area and stated the study and application status of the gas drainage technology in detail, including the high pressurized hydraulic fracturing and permeability improvement technology, outburst prevention technology with high pressurized hydraulic borehole flushing, controlled standing blasting technology of deep borehole through strata, high pressure pulse water jet drilling and cutting integrated technology, high pressurized abra- sives jet slotting outburst prevention technology, comprehensive gas control technology of separated source gas drainage, the air moisture reversed rotary method to improve gas drainage rate and surface well drilling and gas drainage technology. The application of the above methods could effectively improve the gas pre-drainage rate. When the gas content ≤ 10 m^3/t, 〉 10- 15 m^3/t and ≥ 15 m^3/t, the gas pre -drainage rate of the outburst seam could reach 〉20%. 〉45% and 〉50%.
Keywords：gas drainagehigh pressurized hydraulic fracturinghigh pressurized hydraulic borehole flushingstanding blastinghighpressure pulse water jet drilling and cuttingoutburst prevention technology
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 42-47 )