一、由於金屬矿床的組份分佈一般都不均匀,通常有用成份的富集可採地段和有用成份含量不高,不具备工業价值的貧矿地段参差出現。在同一矿脈中,相隣的地段其有用成份的含量有时可以相差数倍至数十倍,品位的分佈是很不均匀的。因此,在拥有足够的資料,进行儲量計算时,往往考虑採用含矿系数,以便於依据这些資料考虑將来的採矿等工作,而將無 First, due to the distribution of metal deposits generally uneven, usually useful components of the enrichment of available sections and useful content is not high, do not have the industrial value of poor areas appear mine. In the same vein, the content of useful components of adjacent lots can sometimes differ by several times to several tens of times, and the distribution of the grade is very uneven. Therefore, when there is sufficient information for reserve calculation, the ore-bearing factor is often considered in order to consider the future mining work based on these data, and no