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级差品位指标体系并不排斥传统品位指标体系的合理内容,它应当说是原有品位指标体系更深化、更系统的发展形式。 多数固体矿产至今仍使用着“边界品位”和“块段最低平均品位”这两项指标。有的参考手册对个别矿种提出过“矿区最低平均品位”指标,但极少实际应用。按地质经济原则,各个矿区不论怎样确定品位指标,一般来说,矿区平均品位指标都高于块段平均品位指标,后者又高于边界品位指标。这里即包含着各项品位指标逐级递变的某种规律。只要揭示各级储量的品位下限的递差规律,级差品位指标体系就呈现在我们面前了。
Grading grade index system does not exclude the reasonable content of the traditional grade index system, it should be said that the original grade index system deepen, more systematic development. Most solid minerals still use the “boundary grade” and “the lowest average block grade,” these two indicators. Some reference manuals have proposed “the lowest average grade of mining area” index for individual mineral species, but very few practical applications. According to the principle of geology and economics, no matter how the mines determine the grade index, in general, the average grade index of the mines is higher than the average grade index of the block, which is higher than the boundary grade index. Here contains a variety of grade indicators of gradual change of some kind of law. As long as the grading laws of the lower limit of the grade of reserves at all levels are revealed, the system of grade-grade indicators presents to us.