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西格尔(H.O.Seigel)从理论计算得到导电颗粒含量为25％的极化球体有最大异常,因此认为:激发极化法只宜于寻找中等浸染程度的矿体,对于含量很高的矿体或良导致密型矿体,激发极化法是不行的。据称这种“饱和效应”的理论得到野外结果的证实。 本文根据我国激发极化法在良导致密型矿体上大都能获得明显视极化率异常的事实,说明西格尔的“饱和效应”理论与事实不符。本文认为良导致密型极化体不存在“饱和效应”问题,激发极化法对它们的勘探也是有效的。可能由于西格尔把低含量理论公式,不计条件地推导到高含量、甚至良导矿体,因此他的结论是错误的。本文最后讨论了电阻率因素对浸染型球体视极化率强度的影响。
According to HOSeigel’s theory, the maximum anomalies of polarized spheres with 25% conductive particles are considered. Therefore, it is considered that the excited polarization method is only suitable for finding ore bodies with intermediate degree of dip. For high content ore bodies Or good lead to dense ore body, excitation polarization method is not enough. It is said that this theory of “saturation effect” has been confirmed by field results. According to the fact that the excitation polarization method in our country can lead to the obvious apparent polarization rate abnormality in most of the ore bodies, the theory of “saturation effect” of Siegel is inconsistent with the facts. In this paper, it is considered that there is no “saturation effect” problem in the case of a good-conductivity dense polarizer, and the excitation polarization method is also effective for their exploration. It may be that his conclusion is wrong because Siegel introduced the low-content theoretical formula to high-abundance and even good-quality ore bodies. Finally, we discuss the effect of resistivity on the apparent polarizability of dip-spheroids.