本刊讯 大连市甘井子区沧崖石灰石矿采用深孔爆破技术,不仅保证了安全生产,而且经济效益明显的提高。 这个矿生产各种建筑石材。过去采矿方法落后,每年都发生人身伤亡事故。1986年,他们采用廉价、安全的铵油炸药和自上而下水平分层的采矿方法以及非电导爆先进起爆方法,采用深孔 Ben Gaoxin Ganjingzi District of Dalian City, Longya limestone mining using deep-hole blasting technology, not only to ensure safety in production, but also significantly improve economic efficiency. This mine produces a variety of building stones. In the past, backward mining methods resulted in personal injuries and deaths every year. In 1986, they adopted cheap and safe ammonium explosives and top-down horizontal stratified mining methods as well as advanced initiation methods for non-conducting explosions. Deep hole