地下金属矿山采掘作业计划优化模型

为了实现地下金属矿山采掘作业计划编制的实时准确与科学有效性,针对矿山作业地点分散、生产组织复杂、矿石质量难以控制等特征,构建了基于0-1整数规划的作业计划优化模型.通过分析开采技术经济指标及空间逻辑关系,以最小品位偏差为目标,将产量均衡、出矿能力以及品位高低结合开采等转化为约束条件,考虑各采场作业工序、回采顺序、生产能力以及其他生产要素等,运用计算机技术和整数规划方法,得出地下矿山采掘作业计划最优方案.以国内某大型金矿为案例进行了模型的有效性验证,解算出矿山最优的采掘作业计划,并得出作业计划甘特图.结果表明,模型能够指导完成生产作业任务,且满足作业计划连续性和均衡性要求.

Optimization model of mining operation scheduling for underground metal mines

To realize the accurate and scientific optimization of mining production scheduling for underground metal mines, a mathematic model based on 0-1 integer programming was constructed in view of the characteristics of mining process, such as decen-tralized production sites, complex production organization and difficulty in controlling the quality of the ore. After the requirements of economic index and spatial sequence relationship being analyzed, an optimization model was proposed which constrained by the yield balance, ore-drawing capacity and combination of high and low grade, aiming at the minimum grade deviation. The optimal mining schedule for underground mines was obtained by computer technology and integer programming to meet the operating procedure, mining sequence, production capacity and other factors. The optimization model was verified by a case in a large gold mine. The optimal solu-tion, expressed by the Gantt chart, indicates that the model is not only meaningful to guide the completion of production tasks in un-derground mine operation scheduling, but also meets the requirements of continuity and equilibrium of operation scheduling.