浅谈级差品位与表外矿

根据级差品位的概念,在采矿成本,开采分化率,掘进成本知的条件下,可以算出备矿量的级差品位和某个开采阶段矿块的级差品位,当级差品位不大于矿块品位时,矿块具有开采价值。

Acoording the conception of the so called class--difference grade of a mine,the class--differenee grade of the prepared reserves ,and that of an ore block at a particular exploitation phase,can be determined im terms of the mining cost,exploitation rate and digging in cost,if the latter three factors are known.lf the class--differfence grade is less than its geological grade,the ore block is deserved exploitation.