特深工作面长孔预卸压解危技术实践

Practice of long hole pre-unloading and danger elimination technology on deep working face

在分析-1 260 m水平一盘区94102首采工作面开采条件及技术条件的基础上,根据某矿9煤煤岩层冲击倾向性测定"中等偏弱冲击地压危险状态"结论,采用长孔预卸压解危技术对该面具有冲击危险区域进行了卸压作业,确保了工作面安全回采。

Based on analyzing mining conditions and technical conditions of the -1 260 m level of No.1 panel of 94102 first mining working face, according to the coal rock burst tendency conclusion of ＂medium weak rock- burst＂ for No. 9 coal seam of a coal mine,press-relief operation was carried out in areas with outburst danger by using a long hole pre- unloading technology,which has ensured the safety coal winning of working face.