露天矿生产规划要素整体优化方法及其应用  

Holistic Optimization of Production Planning Elements and Its Application for Open-Pit Mine

作　　者：王青[1] 顾晓薇[1] 胥孝川[1] 刘剑平[1,2] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110819 [2]东煤沈阳基础工程公司,辽宁沈阳110016

出　　处：《东北大学学报（自然科学版）》2014年第12期1796-1800,共5页Journal of Northeastern University(Natural Science)

基　　金：辽宁省自然科学基金资助项目(201102065;201202075);教育部新世纪优秀人才支持计划项目(NCET-11-0073);研究生科研创新项目(N130601002);中央高校基本科研业务费专项资金资助项目(N120101001)

摘　　要：以剥采比最大境界为基础,使用锥体排除法,逐步排除满足增量大小且平均品位最低的部分,得到一系列地质最优境界和对应境界的地质最优开采体序列.使用动态规划法得到每个境界的生产计划,从中选出净现值最大的境界作为最优境界,该境界的最佳开采路径作为最优开采方案,实现露天矿境界同生产计划整体优化.对上述算法进行软件开发和实例应用.结果表明,成本及价格保持不变条件下,整体优化最佳规划方案的采剥量及NPV比最大盈利境界分别小42.4%和大17.0%;成本及价格分别上升2%和3.5%条件下,整体优化最佳规划方案的采剥量及NPV比最大盈利境界分别大55.0%和6.0%.Based on the biggest stripping ratio pit, cone elimination method was used to gradually remove the parts which satisfy the increment size while the average grade of removed parts was lowest. In this way, a sequence of geologically optimum pits and push-backs could be obtained. Dynamic programming was used to generate optimum production planning of each pit, based on which the largest NPV was chosen as optimum pit and the best mining path was further chosen as the optimal production design, thus realizing the simultaneous optimization of the pit and production design. The algorithm was programmed and applied on engineering project. The results show that, under the condition of costs and prices remaining the same, ore and waste quantities of the best plan in the holistic optimization are less than 42. 4% of the biggest profit pit while the NPV of the former is 17.0% above the latter. As costs and prices rising by 2% and 3.5% , respectively, ore and waste quantities of the best plan in the holistic optimization are more than 55.0% of the biggest profit pit while the NPV of the former is 6.0% above the latter.

关 键 词：露天矿 生产规划 整体优化 境界优化 锥体排除 

分 类 号：TD854[矿业工程—金属矿开采]