露天矿生产环节多且复杂,生产矿石的数量受多种因素的影响,并且呈随机变化。为了保证采矿工作在时间和空间上的相互衔接,避免由于剥离欠量、掘沟落后造成矿石生产中断,国内外露天矿都用不同的形式和数量规定了“储备矿量”。我国金属露天矿按开拓、采准等工程,准备程度分为二(三)级矿量,且规定了相应的保有期限。从最近一些同志对储备矿量的讨论意见看,多从技术角度对储备矿量的合理确定提出了不少有益的意见,如原有的用“宽度法”设置储备矿量适用于露天矿纵向 Open-pit mines produce many and complex links, the number of ore produced by a variety of factors, and showed a random change. In order to ensure the mutual connection of mining work in time and space and avoid the interruption of ore production due to the insufficient amount of stripping and the trenches, the “open pit deposits” are stipulated by different forms and quantities at home and abroad. China's open-pit metal mine by mining, mining and other projects, the preparation is divided into two (three) level of ore, and provides the appropriate retention period. From the opinions of some comrades on reserves and mineral reserves in the recent past, many useful opinions have been put forward on the reasonable determination of the reserves and deposits from the technical point of view. For example, the original “width method”