Based on some coal seam without mining protection seam to achieve outburst elimination, Hudi Mining Industry Company adopted crossing coal seam drilling technology to extract coal seam gas, on the basis of settling the gas extraction plan, reasonable construction tools and two plugging and one injection sealing technology were chosen. The result showed that coal seam drilling extracted gas 30.3×104 m3 in three months, gas extraction rate 53%, which achieved outburst elimination and ensured safe construction of air returning roadway. Meanwhile, the original rock roadway was used as crossing coal seam drilling to extract coal seam gas, which reduced mine baseboard extraction roadway construction and ensured the safe mining of the roadway.
