一、问题的提出金属矿床地下开采面临的问题较多,各个矿山的情况不同,任务也不尽相同。开采历史长的金属矿山,普遍存在一个值得注意的问题,即过去由于采选工艺和安全上的原因,有一部分矿石储量报损,不少矿山已经或即将面临矿产资源枯竭。随着采矿技术的发展和选矿工艺的进步,目前在技术上有可能把过去报损 First, the problem raised Underground metal mining faces many problems, various mines in different situations, the task is not the same. Mining a long history of the metal mines, there is a common concern that in the past because of the mining process and safety reasons, some of the ore reserves reported losses, many mines have been or will soon face depletion of mineral resources. With the development of mining technology and the progress of beneficiation process, it is technically possible to report the past in the past