摘要
凤凰山铜矿于1971年正式投产后,近20年来,由于系统不完善,采场生产能力低,一直未达到设计指标。采用的采矿方法有水平分层点柱充填法和浅孔留矿法。充填法承担矿山的大部分产量。这种采矿方法原设计的矿块总损失率为27％,其中顶底柱损失10％、间柱损失9％、采场内点柱损失8％。实际总损失率达40％左右,且工艺复杂,安全和作业条件差,采场生产能力仅150吨/日左右。为了寻求安全、经济、高效。
Recently, Feng Huang Shan Copper mine has Carried an experiment of large diameter blasthole stoping method. In this paper, the auther described the geological condition of experiment area, extracting technology and the results. The comparition of major technical-economical index between the method experimented and the cut and fill method initially used in the mine is described as well.
