【摘要】 根据放矿截止品位的优化涉及到整个矿山系统的特点,采用动态系统的研究方法,首先建立了大冶铁矿各动态联系参数间的数学模型,其次建立综合技术经济模型,把技术参数与经济参数密切地结合起来,再利用WhatIf功能进行成百上千个不同方案的对比分析,以计算出各方案的各决策目标值,最后两次应用多目标模糊综合评判法进行优化决策。优化后方案可实现3a总利润、总现值和精矿产量分别增加2596.82万元、2394.36万元和15.68万t。更多还原

【Abstract】 In view that the optimization of the cut-off grade in ore drawing involves the whole mine system, a dynamic system study method is adopted. First, a mathematical model for all the dynamic link parameters of Daye Iron Mine is established, followed by establishing a comprehensive tech-economic model closely combining the technical parameters with economical ones. Secondly, What If function was used to make comparative analysis of thousands and hundreds of schemes and the policy-decision target values of all schemes are calculated. Finally, optimization decision-making is made by using twice multi-objective fuzzy comprehensive evaluation method. The optimized scheme can improve the three-year total profit, present value and concentrate output by 25.9682 M yuan, 23.9436 M yuan and 0.1568 M t respectively.更多还原