【摘要】 在矿产勘查、矿山设计、生产及管理等各阶段都需要进行资源储量估算的工作。地质统计学方法相对于传统储量估算方法具有明显优势,在资源储量估算中获得了广泛的应用。估值过程中单元块尺寸的合理选择对储量估算结果至关重要,然而,在以往实践中块尺寸通常根据经验或主观判断进行选择,缺乏科学依据。本文在总结前人工作及地质统计学资源储量估算经验的基础上,将块尺寸的选取问题明确地划分为勘探阶段和生产阶段。针对不同阶段的特点,重点讨论了块尺寸与品位、储量、估计精度、选别开采单元的关系,为块尺寸的合理选择提供参考。并以某特大型钼矿为工程背景,进行了深度解析及数据实验,得出了块尺寸不仅影响资源品位分布、矿石量而且影响开采技术经济指标的结论,综合考虑估计精度和选别开采单元,推荐该矿床选择15m×15m×15m的单元块尺寸进行储量估算。更多还原

【Abstract】 Resources and reserves estimation play an important role in different stages such as mineral exploration,mining design,production,management and so on.Geostatistics method has many advantages over traditional method in reserves estimation and is becoming more and more widely used.Reasonable setting of block size has a great influence on reserve estimation results,however,in practice,block size is usually defined on the basis of personal experience or subjective judgment,which is a lack of scientific support.In this study,after summarizing predecessors’ work and experience,block size selection for reserves estimation was studied for the stages of exploration and production respectively.According to the characteristics of different stages,the relationships between block size and grade,reserves,estimation variance,selective mining unit were discussed for each stage and advices on reasonable block size selection were provided.Moreover,a large molybdenum deposit was used as engineering background to undertake in-depth analysis and experiments.It is concluded that block size selection not only affects grade variation and ore volume calculation but also the economic and technical evaluation of mining.Block size of 15m×15m×15mis recommended for the reserve estimation of this deposit.更多还原