开采的阶段勘探和探矿

开采的阶段:勘探和探矿(中文6000字,英文4000字)   
采矿前期
第1.4节概述了矿山开采的各个阶段。本章详细论述了前两个阶段勘探和探矿。应当指出，我们将勘探定义为寻找有可能成为矿体的矿石或地质现象，因此，我们在采矿的第二阶段使用狭义的含义。勘探是对地质前景进行评价，以确定其规模、形状等级和利润潜力的活动。每一个矿体通常必须经过这两个阶段，以便确定其经济可行性。虽然在采矿基础课程中把它们分开，但这两个阶段往往是同时进行的，因此很难区分勘探和探矿。当两个活动在一个公司结构中结合在一起时，组合的活动通常称为勘探。

PRECURSORS TO MINING
The stages in the life of a mine were outlined in Section 1.4. This chapter discusses in detail the first two stages, prospecting and exploration. It should be noted that we define prospecting as the search for ore or for geologic occurrences that have potential of being an ore body building on this definition, we must therefore use the narrow meaning for the second stage of mining. Exploration is defined as the activities of evaluating a geologic prospect to determine its size, shape grade, and profit potential. Every mine must normally go through these first two stages so that its economic viability can be established. Although it is helpful to separate them in a basic course on mining, the two stages are often conducted together, making it difficult to distinguish between prospecting and exploration activities. When the two activities are joined together within a corporate structure, the combined activity is normally referred to as exploration.