基于三维仿真的大型露天矿生产能力动态优化

Dynamic Optimization of Productivity for Open-pit Mine Based on 3D Simulation

为获得更为优越的露天矿生产能力,提出了基于三维仿真的矿山产能动态优化方法。首先在传统产能验证方法基础上,综合考虑矿山实际情况制定多组产能方案,再利用三维仿真方法完成各方案进度计划的快速编制,经统计基建剥离量、出矿品位、矿岩采剥量等基础数据,计算获得各方案动态经济效益指标,最终得到技术上可行、经济上最优的矿山生产能力。以某大型铜矿为例,利用国内外普通验证方法获得了该矿山的估算日生产能力为10万吨,参照预选的选矿设备要求制定了6种产能方案,利用三维可视化的进度计划编排软件MineSched实施各方案,通过比较内部收益率(IRR),确定矿山最优日生产能力为15万吨,较传统生产能力验证所得提高了约50%,内部收益率增加了约3个百分点。

A dynamic optimization method is proposed for the mine productivity based on a 3D simulation. Firstly, taking the comprehensive situation on site into account, several production programs were prepared based on the verifica- tion method for traditional productivity of mine. Then, the schedule was quickly compiled for each program by 3D simulation method. Finally, the mine productivity with technical feasibility and economic profitability was obtained by calculating dynamic indexes of economic benefit based on the basic data statistics including stripping volume for infra- structure, extracted ore grade, extraction quantity of ore rock. Taking a large-scale copper mine as an example, its pro- ductivity was estimated to be 100 000 t/d by the existing verification method. 6 production programs were prepared based on the required processing equipment for pre-processing. Then each program was performed using Minesched Software. Finally, the optimal daily productivity was determined to be 150 000 t/d, up 50% comparied with tradition verification method, with IRR approximately up 3 percentage points.