赞比亚罗恩(Roan)联合矿山有限公司的穆富利腊(Mufulira)铜矿,近年来推广了大直径深孔空场采矿法.该矿采用这种方法已采出矿石100多万吨,目前矿山产量达80000吨/日. 大直径空场采矿法与一般采矿方法相比,前者凿岩费用较高,但开拓、采切工程少40%,因此,最终采矿费用可节约30%;同时也缩短了采准所需的时间.此外,由于这种采矿法不分分段进行回采,则回采可集 The Mufulira copper mine at Roan United Mining Co. Ltd. in Zambia has in recent years promoted the large-diameter deep-hole empty-field mining method, which has produced more than 1 million tons of ore using this method and currently Compared with the general mining methods, the large-diameter open-field mining method has higher rock drilling costs, but has 40% less exploitation and cutting work, so the final mining cost can be saved by 30%. At the same time, Shorten the time required to take the quasi-mining.In addition, since this mining method does not divide the sub-section for the recovery, the recovery can be set