一、问题的提出 多年来矿山设计中确定投产年的产量比例(简称投产比,下同)时一直沿用百分比法,即简单地选用一个比例,如30％,50％。这个确定方法过于简单,仅仅按不同规模一刀切,没有考虑各个矿山的具体情况,也不适应投资从气偿使用改为贷款的新情况。 为了使(?)产比例确定得比较合理,既不因产量太低使企业亏损,也不因投产比例过高而使投资占用太多,因此提出如下公式: First, the issue raised Over the years mine design to determine the production of the year production ratio (referred to as the production ratio, the same below) has been using the percentage method, that is, simply choose a ratio, such as 30%, 50%. This method of determination is too simple. It is based on different scales and does not take into account the specific conditions of various mines. It does not meet the new situation in which investment is changed from gas-using to loans. In order to make the proportion of production more reasonable, neither because of the production is too low to make the loss of enterprises, not because of the high proportion of investment and make the investment too much, so the following formula: