Using the calculations of linear digital filtering method, this paper affairms the existence of the specious phenomena in the resistivity togging of horizontal strata. and makes it clear that these phenomena occur only on the cross section with low-resistance conducting basement. In addition, it gives qualitative interpretation for their physical essence. The authors study emphatically the quantitative relationships between critical polar distance, maximum deviation of apparent resistivity, surface resistivity and thickness. As for the three-la yered section with low-resistance conducting basement, in case when the first layer is locally thickened, the boundary element numerical technique is used to calculate the apparent resistivity profile curve of symmetrical quadrupole which is larger than critical polar distance, and the results demonstrate convincingly the practical significance of the specious phenomena in data interpretation.
出版日期: 1988-12-24
引用本文:
李金铭, 俞日洲. 水平地层视电阻率测量中的似非而是现象及其实际意义[J]. 物探与化探, 1988, 12(6): 423-432.
Li Jinming, Yu Rizhou. SOME SPECIOUS PHENOMENA IN APPARENT RESISTIVITYMEASUREMENT FOR HORIZONTAL STRATA. Geophysical and Geochemical Exploration, 1988, 12(6): 423-432.
[1] kunertz,G, 1966,Priaciples of direct current resistivity prospecting, Borntrasger,p.70-71.
[2] Satpaths B.N.1974.A paradox in apparent resisubity preasurements over a ground section with conductive Substratum. Geophysics,Vol.39,No 1.(中译文,见电法勘探文集,1987,地质出版社)
[3] 傅良魁,姚文斌:1984,水平层电测深正演计算的改进,物化探计算技术第3期.
[4] 傅良魁,李金铭:1980,电法勘探教程,地质出版社.
[5] 李金铭,赵改善:1987,水平层激电负效应和超正效应分布规律的研究,物探与化探第5期.
[6] 徐世浙:1986,水平低性而为地点断面电源电厂的正演,物化探计算技术,第1期.