High density electrical measurement device and its method to measure polarizability through the use of metal electrodes

Abstract

The invention discloses a high density electrical measurement device and its method to measure polarizability through the use of metal electrodes. The measurement device comprises an electrical instrument and a high voltage direct current power supply device wherein the latter includes a main controller, an isolation driving circuit and an H bridge circuit and the former includes a metal electrode A, a metal electrode B, a metal electrode M and a metal electrode N. Through the cooperation of a high-voltage direct current power supply device and an electrical instrument and rather than the use of a non-polarized electrode to measure the polarizability, the measurement device and the method are easy to operate; compared with the traditional polarization excitation method, the device and method can accomplish higher detection efficiency. Compared with the prior art using polarized electrodes to measure the polarizability, the error of the polarization effect caused by the power supply electrodes to the geology is eliminated, and higher accuracy and detection effect can be accomplished. The device and method are suitable for the exploration of earth resistivity and polarizability.

Description

technical field [0001] The invention relates to the technical field of geophysical exploration, in particular to a measuring device and a measuring method for measuring polarizability by using a metal motor. Background technique [0002] There is a potential difference between any two points on the earth's surface, which exists in the form of direct current potential, which is called natural potential. [0003] The resistivity method in the field of geophysical prospecting technology is a kind of conduction-like electrical prospecting method. It is based on the difference in conductivity between various rocks (ores) in the earth's crust. The distribution law of natural electric field or artificial electric field can be used to find out the geological structure or solve the problems of water resource investigation, rock fragmentation and sewage area in the fields of astrogeology, engineering geology and environmental geological exploration. [0004] When the metal electrode ...

AI Technical Summary

Problems solved by technology

[0005] The traditional induced polarization method uses metal electrodes for power supply electrodes A and B, and non-polarized electrodes for measuring electrodes M and N. The metal electrode is a copper rod, and the non-polarized electrode is a pot-shaped structure, such as copper-copper sulfate (Cu-CuSO 4 ) electrode, the structure of which is to install copper sulfate solution in a biscuit porcelain pot, insert a small copper rod into the copper sulfate solution, and contact the earth through the copper sulfate solution. The polarization voltage of this electrode is not large, but a smaller pole The stabilization time of the chemical voltage is about one hour, it is very inconvenient to use in the field, and the exploration time is long

Images