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中文摘要：
基于泥河铁矿床矿体地质特征的详细研究，本文结合边界品位指标以及样条曲线方法对矿体边界进行简化平滑处理，并通过对各剖面的矿体解译边界进行圆滑渐变处理建立控制矿化边界的矿化域模型。基于矿化域模型，用于储量估算的样品分析数据具有更好的连续性和全面性，避免了双指标圈矿带来的矿体形态过度复杂和在三维空间内不可避免的空间占位现象。基于矿化域模型进行的储量估算，可以更快速、合理地获取矿体品位的空间分布特征，从而提高金属矿床储量估算结果的准确性和合理性。
英文摘要：
On the basis of recognition of the geology characteristics of the Nihe iron deposit, this study tries to use cutoff grade to delineation ore bodies with single-grade index and use Spline curves to smooth the interpretation boundaries of each section, and the gradient mineralized domain has been established. For the gradient mineralized domain used, the unreasonable intersection among complex shape of ore bodies which result from delineation ore bodies with double-grade index has been eliminated, the sample assay data used for the reserves estimation has better continuity and comprehensiveness, and the grade distribution and the reserves can be estimated more reasonable and efficiently.
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