基于物元分析和组合权重的原地浸矿技术适用性评价模型

为实现离子吸附型稀土原地浸矿精细化开采,提高采矿资源回收率,应用物元分析理论建立原地浸矿开采技术适用性评价数学模型。构建了包含15项影响因素的原地浸矿开采技术适用性的评价指标体系,通过物元变换建立适用性评价的物元体系,计算评价指标对评价等级的关联度,引入熵权法和层次分析法计算评价指标组合权重,然后根据待评估指标与设定等级的综合相关度确定适用性等级。该模型将适用性分为五个等级,建议对适用性为I^III级采场进行原地浸矿开采,对IV和V级采场进行资源储备,待技术进步后再开采。将该模型应用于赣南粤北某3个采场,评价结果与实际情况相符。

Applicability Evaluation Model of In-situ Leaching Technology Based on Matter Element Analysis and Combination Weight

In order to realize fine mining of ion-type rare earth in-situ leaching and improve the recovery rate of mining resources,a mathematical model for evaluating the suitability of in-situ leaching mining technology was established by matter element analysis theory.An evaluation index system for the suitability of in-situ leaching mining technology with 15 influencing factors was established.The matter-element system of applicability evaluation was established by matter-element transformation,and the correlation degree of evaluation index to evaluation grade was calculated.The combination weight of evaluation index was calculated by entropy weight method and analytic hierarchy process,and then the applicability grade was determined according to the comprehensive correlation degree between the evaluation index to be evaluated and the set grade.The model divides the evaluation results into five grades.And,it is suggested that stopes I^III should be exploited,stopes IV and V should be reserved and then exploited after technological progress.The model was applied to three stopes in southern Jiangxi and Northern Guangdong,and the evaluation results are consistent with the actual situation.