Experimental tank and moisture-containing rock direct-current apparent polarizability determining device and method

Abstract

The invention discloses an experimental tank and a moisture-containing rock direct-current apparent polarizability determining device and method and belongs to the field of training aids. The experimental tank comprises an experimental tank body and a press-flattening plate matched with the experimental tank body, wherein four hollow insulating seepage columns are arranged in the experimental tankbody. The moisture-containing rock direct-current apparent polarizability determining device comprises a detection device for detecting voltage, a flushing device and the experimental tank. The determining method adopting the determining device comprises an experimental rock sample is prepared, filling and press-flattening are performed, power supply voltage is changed through an adjustable direct-current voltage source, the embedding depths of all electrodes are changed through the insulating seepage columns, the shale content and mineralization degree of an internal solution of the experimental rock sample are changed through cooperation between a solution inlet and a solution outlet and the flushing device and a solution leakage valve, and the porosity of the experimental rock sample is changed by knocking on the side wall of the experimental tank body. A time-dependent curve of the voltage located between the second electrode and the third electrode is detected by utilizing a detection device, and thus the apparent polarizability is calculated.

Description

technical field [0001] The invention relates to the technical field of teaching appliances, in particular to an experimental tank and a device and method for measuring direct current apparent polarizability of water-bearing rocks. Background technique [0002] The DC induced polarization method is a method of obtaining the apparent polarizability of the formation by applying a DC voltage to the formation for a period of time and then stopping the power supply. During the whole process, the voltage change between the two measuring electrodes is recorded. It can be widely used to solve the problems of metal minerals, hydrogeology and engineering geological exploration. [0003] The apparent polarizability itself is affected by many factors, such as the porosity of the rock, the salinity of the formation water, and the shale content of the formation water. In theory, the true polarizability should not be affected by the buried depth of the electrode system and the power supply...

AI Technical Summary

Problems solved by technology

In theory, the true polarizability should not be affected by the buried depth of the electrode system and the power supply voltage, but in the actual exploration process, the above two factors will also affect the apparent polarizability

[0004] In the teaching process, the influence of the above factors on the apparent polarizability is only conclusive and abstract for students, and it is not convenient for students to recognize and understand

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