某大型金矿开拓方案比选分析

Comparison and Analysis of Development Plan for a Large Gold Mine

以国内某大型地下金矿为例,根据矿区开采技术条件和开拓系统影响因素,结合采矿方法、选厂布置以及矿区地表运输等条件,初拟主斜坡道方案、主副斜井方案和混合井方案进行技术经济比较。分析结果表明:开拓系统是井下较为关键和复杂的生产系统,开拓方案比选需要综合考虑方面因素,仅靠费用现值一个指标,不能判断方案的优劣。通过采用最小二乘法建立指标权重评价模型,统筹考虑主观决策和客观实际,实现定性指标和定量指标的综合比选,最终推荐采用主斜坡道方案。

Taking a large underground gold mine in China as an example,a preliminary plan for the main inclined ramp,production&service inclined shaft,and mixed shaft is proposed for technical and economic comparison according to the technical conditions of mining,development system influencing factors,as well as mining methods,concentrator layout,and surface transportation conditions of the mine area.The analysis results indicate that the development system is a more critical and complex underground production system.A variety of factors are needed to be taken into consideration in the comparison and selection of the development plan.Relying solely on the cost present value is unable to determine the advantages and disadvantages of the plan.By using the least squares method to establish an indicator weight evaluation model,integrating the consideration of subjective decision-making and objective reality,and achieving a comprehensive comparison of qualitative and quantitative indicators,the main inclined ramp plan is ultimately recommended.