黄金科学技术 ›› 2019, Vol. 27 ›› Issue (4): 573-580.doi: 10.11872/j.issn.1005-2518.2019.04.573
Qiren TAN1(),Wenming DONG2,Lin BI3(),Xingqi CAI2,Xiaohu MIAO2
摘要:
爆区品位估算是露天铀矿山极其重要的日常性工作。为快速、准确地得到品位估算结果,从估算方法选取展开研究,介绍了最近距离法、距离幂次反比法和普通克里格法等品位估算方法的基本原理。以国外某铀矿为例,采用上述估算方法和三维矿业软件开展了爆区品位估算试验,并以普通克里格法的估算结果为标准,对最近距离法和距离幂次反比法的估算结果进行了偏差、统计和图形分析。结果表明:在矿石量和平均品位方面,与普通克里格法所得的估算结果相比,距离幂次反比法的偏差较小,而最近距离法的偏差较大;在估值准确性方面,距离幂次反比法基本接近普通克里格法,且估值精度满足矿山实际生产的要求,可用于爆区估值,而最近距离法的估值精度相对较差,不能用于爆区估值。距离幂次反比法作为爆区品位估算方法,操作过程简单且参数相对确定,在满足估值精度要求的同时可节约建模时间。该研究成果可为类似露天铀矿山进行爆区品位估算提供一定的指导。
中图分类号:
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