A system suitable for testing the effect of surface polarization between a solid-phase sample and a powered electrode

Abstract

The present invention belongs to the field of the electrical method geology prediction correlation technology, and discloses a system suitable for testing a surface polarization effect between solid-phase samples and current electrodes. The system comprises a signal generation unit, a sample measurement unit, a data acquisition unit and a central processing unit. The signal generation unit is configured to generate sine-wave voltage signals with constant amplitude and changed frequency, then amplify the sine-wave voltage signals with the constant amplitude and the changed frequency and convert the sine-wave voltage signals with the constant amplitude and the changed frequency to the sine-wave voltage signals with the constant amplitude. The sample measurement unit is configured to load the sine-wave voltage signals on the interface between the power supply electrode and the solid-phase sample to induce a polarization effect, a plurality of measurement electrodes are inserted into the solid-phase sample at an equal interval, and the voltage between each measurement point and the power supply electrode is measured. The data acquisition unit is configured to collect measurement data in multi-path mode, and transmit the measurement data to the central processing unit to obtain results. According to the invention, the special requirement of the surface polarization effect test between solid-phase samples and current electrodes can be satisfied, and the accuracy of the results of the advanced geology prediction is improved.

Description

technical field [0001] The invention belongs to the technical field related to electrical geological prediction, and more specifically relates to a system suitable for testing the surface polarization effect between a solid-phase sample and a power supply electrode. Background technique [0002] In the field of geological exploration, the induced polarization method is usually used to find metal minerals and solve problems such as hydrogeology and engineering geology according to the induced polarization effect of rocks and ores. The induced polarization method can be divided into two types: the time domain induced polarization method and the frequency domain induced polarization method. Beam advanced geological prediction is based on the frequency domain induced polarization method, which is a commonly used advanced method in TBM tunnel excavation. Geological forecasting method, through the use of appropriate advanced geological forecasting technology, is conducive to ascer...

AI Technical Summary

Problems solved by technology

Existing surface polarization experiments are carried out at the interface between the power supply electrode and the liquid, but for the measurement of the surface polarization effect between the solid sample and the power supply electrode, it is impossible to measure the electrode in the solid sample like It moves freely in the liquid, so it cannot be infinitely close to the surface of the solid power supply electrode, which makes it difficult for the existing surface polarization experiment test scheme to better meet the actual working conditions.

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