由于采矿业本身的内在风险,使投资分析变得非常复杂。更鉴于设计数据有限,虽然投资级别高,但却不能在初始就精确地确定投资额以及投资分配方式。而且,如果地下采矿条件复杂,那么投资还会大幅度增加。虽然如此,与确定矿山利润率及投资收益率比较起来,投资估算的难度还不算大。 Investment analysis is complicated by the inherent risks of mining itself. In view of the limited design data, although the investment level is high, the amount of investment and the allocation of investment can not be precisely determined initially. And, if underground mining conditions are complicated, then there will be a substantial increase in investment. Nevertheless, compared with determining the mine profit rate and return on investment, the estimated investment is not too difficult.