根据国内外竖井施工实践,采用深孔爆破以提高掘进循环进尺,减少每米井筒掘进辅助时间,充分发挥掘砌设备潜力,是加快竖井井筒施工进度,缩短井筒建设工期的重要措施之一;而提高深孔爆破效率,又是确保掘进循环进尺的关键问题。某矿新副井工程在施工过程中,曾对提高深孔爆破效率问题,进行了前后六十 According to the domestic and international shaft construction practice, the use of deep-hole blasting to improve the driving cycle, reduce the auxiliary time per well borehole excavation, tap the full potential of digging equipment is to speed up the shaft well construction progress and shorten the construction period of one of the important measures; Improve the efficiency of deep-hole blasting, but also to ensure that the driving cycle of the key issues. In the process of construction, the new auxiliary shaft project of a mine once made an effort to improve the efficiency of deep-hole blasting,