摘要
广东高要河台金矿高村矿区 1989年投产至今已有 13年历史 ,浅孔留矿采矿法开采 ,由于采空区破坏导致相互连通 ,很多采场在覆岩下出矿 ,矿山估计矿石二次贫化率 37% ,个别采场实际大于此数。近年采空区采用隔离技术后 ,二次贫化大为降低 ,并取得明显经济效益。
The Hetai Gold Mine of Gaoyao County,Guangdong province has a history of 13 years since it begun to put into operation by short hole shrinkage.Due to the breakdown of mined out area leading hem link up,lots of stopes draw ores under rock cover.The rate of second time dilution comes to 37% or more.Since the employment of isotating technic,the secondary ore dilution reduce greatly.
出处
《黄金》
CAS
2002年第7期15-18,共4页
Gold
