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笔者曾对直流电法的视电阻率进行过低通滤波.笔者认为:从微观物质组份来讲,可以认为岩石组份差异不是突变的,而是渐变的,因此理论上,可以说电阻率应当是一种连续的变化.在电法理论上,视电阻率的表征可以用连续函数式,说明理论基础其性质是连续的.在实际工作中,我们的测量数据也可以认为是连续数据的离散点值.连续函数性质决定我们可以使用一些滤波方法对其进行滤波处理.我们是在工作中对电磁法工作测得的视电阻率进行了滤波处理.而且我们定义滤波后的剩余视电阻率为“相对视电阻率”.我们认为,这种“相对视电阻率”反映的不是岩性的变化,而是蚀变的,或者是同一岩性内部微弱的组份变化.通过研究区相对视电阻率计算,将硅化的地质体区分出来,从而将含铁石英岩的界线清理出来.解决了在电阻率差异悬殊的背景下,硅化的弱小电性差异不能很好视别的问题.
The author has conducted a low-pass filtering of the apparent resistivity of the DC method.The author believes that from the perspective of the microscopic material composition, it can be considered that the rock composition difference is not abrupt but gradual, so in theory, it can be said that the resistivity should be Is a continuous change in the theory of electrical law, the apparent resistivity can be characterized by a continuous function, indicating that the nature of the theory is continuous in our work, our measurement data can also be considered continuous data discrete Point value. The nature of the continuous function determines that we can use some filtering method to filter it .We work in the work of the electromagnetic method measured apparent resistivity was filtered. And we define the filtered residual apparent resistivity of “Relative apparent resistivity”. “We think this” relative apparent resistivity "does not reflect changes in lithology, but alteration, or changes in weak components within the same lithology. By studying The relative apparent resistivity calculation of the area distinguishes the silicified geologic bodies from the boundary of the ferrous quartzites and solves the problem that the weakness of silicification can not be distinguished in the context of the large difference in resistivity Good to see other issues.