多金属地下矿山生产计划动态优化

为了实现多金属地下矿山生产计划编制的动态性和科学有效性,以开采过程中技术经济要求和空间序列关系为约束条件,以利润最大化为目标构建多金属地下矿山生产计划动态优化模型.模型将采准、切割、爆破、回采和充填过程抽象为基本作业单元并加以模型化处理,将地下开采的均衡性要求和接续性问题转化为空间约束条件,以开采状态作为决策变量,构建生产计划优化的0-1整数规划模型,并给出基于人工蜂群模型的求解算法.以西藏某铜钼矿的生产计划动态编制为应用案例,优化解算出矿山未来3年的生产计划,并给出矿床开采时序的三维可视化展示.优化结果表明,通过开采区域的动态调整,在有效保证生产连续性的同时,提升了矿山开采的经济效益. 

Dynamic optimization of production plans for multi-metal underground mines

In order to realize the dynamic and scientific optimization of production plans for multi-metal underground mines,we convert underground mining processes into a mathematic model constrained by several conditions to meet technical and economic requirements as well as spatial sequence relation,which aims to maximum profits. Operating units including cutting,blasting,mining and filling are treated as a whole process in the model. The underground mining condition of equilibrium and continuity is transformed into a space constraint. Considering the mining state of ore blocks as the decision variable,a model of production planning optimization is constructed by binary integer programming and calculated by an algorithm based on the artificial bee colony model. The optimization model was applied in a multi-metal underground mine in Tibet in southwestern China to optimize the production plan in the next three years which was illustrated by three-dimensional visualization display. The optimal solution indicated that the dynamic adjustment of the mining area could guarantee continuous production and increase the economic benefit of mine exploitation.