Outburst Prevention Technology of Seam Opening in South Ventilation Shaft of Yuwu Coal Mining Company

According to the high gas pressure, deep mining depth and other features of No.3 seam in the seam opening area of the South Ventilation Shaft of Yuwu Coal Mining Company, an area prediction was conducted on the seam opening area of No.3 seam.According to the area prediction results, an outburst danger in the fro nt seam could be analyzed and judged.The comprehensive outburst prevention measures with the regional pre-drainage as main and the local drainage as the secondar y were applied to the safety seam opening steadily with the frequent efficient inspection and rapid method.The seam opening project was completed 10 days in advance to pass through No.3 seam.Meanwhile a completed set comprehensive outburst prevention technical system suitable for the seam opening in the mine shaft of Yuwu Co al Mining Company was formed.