中文摘要：

给出一个基于经济合理剥采比和品位块状模型的露天金属矿境界优化实用算法。该算法通过浮锥扫描与排除,在几何定界得到的最大境界范围内,剥去那些境界剥采比大于给定经济合理剥采比的部分,得到最优境界。该算法可以方便地处理不同方向和区域具有不同帮坡角的情况,而且可以在不同的标高范围用不同的台阶高度。应用表明,算法的计算效率高,适应和实用性强。

英文摘要：

This paper presents a practical final-pit optimization algorithm for open-pit metal mines based on a breakeven strip ratio and a block model of ore grade.In this algorithm,the optimum final-pit is obtained by using a cone-scanning and eliminating process to strip off the portions whose instantaneous strip ratios are greater than the breakeven strip ratio,starting from the geometrically bounded pit which is the largest possible pit limit.The algorithm can easily incorporate different final-slope angles in different directions and zones,and different bench heights in different altitude ranges.The application showed that the algorithm was computationally efficient and highly practical.