数理统计法在处理老鸦巢Ⅳ号金矿体特高品位中的应用研究  

Research on Application of Mathematical Statistical Method in Processing Laoyachao Ⅳ Gold Ore Body with Very High Grade

作　　者：蔡亚飞 左昌虎 刘崇龙 李红湘 CAI Yafei;ZUO Changhu;LIU Chonglong;LI Hongxiang

机构地区：[1]湖南水口山有色金属有限责任公司,湖南衡阳421513

出　　处：《中国矿山工程》2022年第6期30-34,共5页China Mine Engineering

摘　　要：在矿产资源储量估算过程中,经常会遇到样品特高品位的处理,目前对于特高品位处理常用方法有两种,即传统倍数法和数理统计法。本文以老鸦巢Ⅳ号金矿体二期详查报告中的取样数据为研究对象,采用水平断面法进行资源量估算,针对倍数法处理特高品位存在地质品位偏高的现象,从倍数法、数理统计法两方面对比探讨特高品位下限值及处理结果合理性。研究表明,倍数法缺乏统计学的理论依据,只是经验而为;数理统计却能很好的考虑到相关统计特征数值,具有数理统计意义。经数理统计处理后,样品品位变化系数有一定程度降低,样品的算术平均值接近且小于西舍尔估值,加权品位降了0.35g/t,处理后地质品位与实际出矿情况更吻合,减弱了特高品位样品的影响。In the process of mineral reserve estimation,we often come across the processing of samples with exceptionally high grades,and presently there are two common methods for processing exceptionally high grades,namely Traditional Multiplier Method and Mathematical Statistical Method.By taking the sampling data from the general exploration report of Laoyachao IV gold ore body(Phase II)as the research object,this paper employs the horizontal section method to conduct the resource estimation,and in view of the phenomenon where the geological grades obtained by using the multiplier method are usually undesirably high,it also discusses the lower limit value of exceptionally high grade and the reasonableness of the processing result from multiplier method and mathematical statistical method,.The research shows that the multiplier method lacks the theoretical basis of statistics and is only empirical,while mathematical statistics can well take into account the values of relevant statistical characteristics and has mathematical and statistical implications.After the mathematical and statistical processing,the sample grade variation coefficient has been reduced to some extent,the arithmetic mean of the samples is close to and less than the Sichel valuation,the weighted grade is reduced by 0.35 g/t,the geological grade after processing is more consistent with the actual conditions ofRo M ore,mitigating the influence of the extra high grade samples.

关 键 词：资源储量估算 特高品位 传统倍数法 数理统计法 对比探讨 

分 类 号：TD912[矿业工程—选矿]