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向山硫铁矿自1964年试验有轨运输的无底柱分段崩落法以来,主要技术经济指标较之原先的低分段崩落法有了显著改善。但从近几年全矿综合贫损指标(见表1)可知,矿山的损失贫化问题仍有待研讨改进。本文着重就产生矿石损失的主要原因,以及进一步改善矿损贫化指标的途径,作以下分析和探讨。
Since the hillside pyrite mine has been experimentally tested for rail transportation since the pillarless subsidence method in 1964, the major technical and economic indicators have significantly improved over the previous low-subsidence caving method. However, in recent years, the comprehensive loss index of the whole mine (see Table 1) shows that the problem of depletion of mines remains to be improved. This article focuses on the main reasons for the loss of ore, as well as ways to further improve the indicators of mineral loss and depletion for the following analysis and discussion.