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砂岩型铀矿床的产出常与层间氧化带密切相关。利用物探方法研究氧化带、氧化还原过渡带及还原带的特征，可为铀矿勘查提供重要依据。本文根据层间氧化带的形成特征，探讨了产生自然电场的基本原理，通过在已知和未知铀矿化地段的工作，总结了层间氧化带在地表的自然电场分布特征，利用自然电场剖面测量曲线的梯度变化拐点确定氧化带前锋线──氧化还原过渡带，取得了比较理想的效果。
The output of sandstone-type uranium deposits is often closely related to the interlayer oxidation zone. The use of geophysical methods to study the characteristics of oxidation zone, redox transition zone and reduction zone can provide an important basis for uranium exploration. Based on the formation characteristics of interlayer oxidation zone, the basic principle of generating natural electric field is discussed. Based on the work of known and unknown uranium mineralized areas, the characteristics of natural electric field distribution of interlayer oxidation zone are summed up. By using the natural electric field profile Gradient changes in the measured curve Inflection point to determine oxidation zone forward line ─ ─ redox transition zone, and achieved a more satisfactory results.