广东凡口铅锌矿是我国最大的铅锌生产矿山,资源条件优越,储量大、品位高、远景好。降低损失贫化意义更为重大。为了最大限度地回收矿石资源,减少损失贫化和避免地表崩落,采用充填采矿法,并将矿块划分为矿房、矿柱二步回采,最后回收顶、底柱。为了提高采场生产能力,降低贫化损失,盘区机械化分层充填法和VCR法为目前矿山的主要采矿方法。地测部门用直接 Guangdong Fankou lead-zinc mine is the largest lead-zinc mine in China with superior resource conditions, large reserves, high grade and good prospect. Reduce the meaning of loss of dilution is even more significant. In order to maximize the recovery of ore resources, reduce depletion and avoid surface subsidence, the Filling and Mining Law is adopted and the ore blocks are divided into ore blocks. The ore pillars are recovered in two steps and finally the top and bottom pillars are recovered. In order to improve stope production capacity and reduce depletion loss, mechanized decking and VCR method are the main mining methods for mines. Geodetic departments with direct