【摘要】 本文对露采矿山台阶剖面上的矿体边界线进行了分析，提出直线型、凸型和凹型等三大矿体边界类型，并结合其与铲装方向及矿体铲状特征等关系，进一步作了详细的划分。从而对露采矿山贫化损失计算的直接法进行了改进，实现了快速、准确的电算化。更多还原

【Abstract】 The boundary lines of ore body on bench section in open - pitmine are anslysed in this paper, and three types of linear, convex, concave are pointedout. Futher detailed division about boundary lines of ore they are made combined withshovelling direction and occurence characteristics of ore body. The calculation methodof dilution and losses in open - pit mine was improved with fast and accuracy computeri-zation.更多还原