云南易门铜矿从1960年开始,先后有五个矿山投产,采矿方法以分段和阶级崩落法为主(占95％),留矿法和其它方法为辅。到1986年止,累计产出精矿含铜25万多吨,总消耗地质储量44万多吨(其中:储量报销9.9万吨;开采损失5.5万吨;选矿损失3.7万吨),平均1.76吨地质储量,生产1吨精矿含铜。全矿总损失率为15.89％,总贫化 Since 1960, Yunnan Yimen Copper Mine has put into operation five mines in succession. The mining methods are mainly sub-level and class collapse (95%), supplemented by the ore retention and other methods. By 1986, a total of more than 250,000 tons of copper concentrate had been produced, with a total consumption of more than 440,000 tons of geological reserves (including 99,000 tons of reserves, 55,000 tons of mining losses and 37,000 tons of mineral processing losses), with an average of 1.76 tons Geological reserves, production of 1 ton of concentrate copper. The total loss rate of 15.89% mine, total depletion