A one-dimensional direction correction method of natural electric field based on measuring electrode coordinates

Abstract

The invention discloses a natural electric field one-dimensional direction correction method based on measurement electrode coordinates. For natural electric field data, the natural electric field one-dimensional direction correction method based on the measurement electrode coordinates performs direction correction on the natural electric field data of all recording points based on the geodetic coordinates of the two measurement electrodes of the corresponding recording points, thereby obtaining the natural electric field data after the direction correction of each recording point; and then the geological conditions of a survey area are comprehensively judged and interpreted based on the corrected natural electric field data. The natural electric field one-dimensional direction correctionmethod based on the measurement electrode coordinates can effectively correct the natural electric field data, improve the comparability of the natural electric field data of different recording points, and thereby improve the exploration precision.

Description

technical field [0001] The invention relates to a natural electric field one-dimensional direction correction method for improving the natural electric field exploration effect in the field of exploration geophysics. Background technique [0002] In electrical prospecting, there is a frequency selection method that uses the measurement of natural electric field for geological prospecting. This method uses two grounded measuring electrodes to directly measure the electric field signal strength of different frequencies of the natural electric field of the earth, without measuring the natural magnetic field of the earth, and without arranging artificial electric fields, so the method has high work efficiency, low exploration cost, and Humanistic electromagnetic interference ability is strong, which has obvious advantages in geological exploration. In actual field exploration work, the geological conditions of a recording point are generally judged according to the natural elec...

AI Technical Summary

Problems solved by technology

In actual field exploration work, the geological conditions of a recording point are generally judged according to the natural electric field strength between two measuring electrodes at a recording point, and normalized according to the distance between the two measuring electrodes, while Regardless of the specific positions of the two measuring electrodes on the recording point, but as the natural excitation source of the natural electric field, the strength of the excitation signal in each direction is not exactly the same, so the natural electric field signal measured at each recording point includes If the signal strength and direction information of the natural excitation source are not considered, if the natural electric field information on the recording point is taken as the total signal strength of a certain recording point without considering the specific position of the measuring electrode, the directionality of the natural excitation source will be covered up, thus The exploration accuracy of this method is reduced, so it is necessary to process the natural electric field data on the recording points, extract the natural electric field data in the same direction, reduce the influence of the directionality of the natural electric field excitation source, and improve the data comparability between different recording points. to improve the exploration effect of the natural electric field method

Images