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我矿南山露天采场开采至今已有十多年的历史,多年的实践证明,采用传统的钻探剖面法(垂直剖面法与水乎剖面法)计算地质品位,即使将钻探网度加密到50米×50米(A_1级),也难于满足矿山编制年度计划对其的精度要求。近年来,我们对此问题作了一些探讨,认为采用顶层真实品位与本层和底层有关钻探品位的距离乎方反比法估算地质品位,可以较为完满地解决这一问题。(一)钻探剖面法存在的问题下图是100个50米×50米×12米的矿块用生产爆破
Mine mine Nanshan open pit mining has been more than 10 years of history, many years of practice has proved that the use of the traditional drilling section method (vertical section method and the water section method) to calculate the geological grade, even if the drilling network encryption to 50 meters × 50 meters (A_1 level), it is also difficult to meet the accuracy requirements of its annual plan for mine preparation. In recent years, we have made some discussions on this issue. We believe that this problem can be solved more satisfactorily by using the top-level real grade and the ground-level and bottom-level drilling methods to estimate the geological grade by the inverse square method. (A) of the problems of the drilling profile method The figure is 100 50 meters × 50 meters × 12 meters with the production of blasting