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本文介绍带电收集片测定土等粉末样品的 Ra 含量来找 U 矿的方法,称为 Ra 法。此法灵敏度高,操作简便,成本低,可以使用~(210)Po 法曲仪器和铜片,便于推广使用。文中介绍了测 Ra 流程,测定误差和灵敏度.Ra 法在详查和区调阶段的用途。总结了深部盲矿、地表矿化和非矿异常地段上地表的 Ra、Po 和γ异常的特征,指明 Ra 法和 Po 法结合可用于评价异常,提高找深部铀矿的能力。
This article describes the collection of charged charged pieces of soil samples such as the determination of the Ra content to find U ore method, known as the Ra method. This method has high sensitivity, easy operation and low cost. It can be used with ~ (210) Po curve instrument and copper plate for easy popularization. In this paper, the process of measuring Ra, the error of measurement and the sensitivity are introduced.The use of Ra method in detailed investigation and regional adjustment stage. The characteristics of Ra, Po and γ anomaly on the surface of deep blind mine, surface mineralization and non-mine anomalies are summarized. It is indicated that the combination of Ra method and Po method can be used to evaluate the anomaly and enhance the ability to find deep uranium deposits.