在金属矿床开采过程中,准确测定矿石损失率与贫化率,乃是矿山的测量和地质工作者的重要任务之一。本文拟用极大似然方法,就测定矿石损失与贫化精度问题,进行讨论。不当之处,恳望同志们批评指正。(一)计算矿石损失、贫化的基本参数的极大似然估值及精度将极大似然法应用于含有未知参数μ及σ~2的正态分布一个样本,则有:而样本方差:估 Accurate determination of ore loss rate and depletion rate in the mining of metal deposits is one of the important tasks of mine surveyors and geologists. This paper intends to use maximum likelihood method to determine the ore loss and dilution accuracy problems are discussed. Improprieties, earnestly comrades criticize correction. (1) The Maximum Likelihood Estimation and Accuracy of Basic Parameters for Calculating Ore Loss and Pillenization The Maximum Likelihood Method is applied to a sample with a normal distribution with unknown parameters μ and σ ~ 2. The sample variance :estimate