Three-dimensional high-density electric method instrument

Abstract

The invention provides a three-dimensional high-density electrical prospecting apparatus, which comprises a host, two power-supply pole converters, a measurement pole converter, two groups of power-supply electrodes and a group of measurement electrodes. The 3-D high-density electrical prospecting apparatus provided by the invention can utilize an industrial computer in the host to automatically execute more than 5,000 times of recording of large-sample sampling data, mathematical statistics and discrimination, can automatically perform inspection, and can simultaneously generate two-dimensional or three-dimensional images, thereby ensuring accurate reliable visual measurement results. In addition, sampling amount and speed can be increased by utilizing a high-speed data acquisition card in the industrial computer. Besides, as the power-supply pole converters and the measurement pole converter can be remotely controlled by use of the host, more electrodes can be controlled by use of a small quantity of cables, so as to increase measurement ranges and depth and raise measurement speed. Moreover, as the electrodes are arranged in a quadrupole mode, the measurement depth can reach more than 1,000 meters, thereby expanding the application range of the apparatus.

Description

technical field [0001] The invention relates to a geophysical prospecting instrument, in particular to a three-dimensional high-density electrical instrument for detecting water-rich properties of aquifers, water-conducting faults, water-conducting subsidence columns, water-filled roadways and goafs. Background technique [0002] With the increase of mine mining depth and the mining of coal seams closer to strong aquifers, various water-conducting structures are exposed and mining activities near old empty areas increase, water inrush accidents occur frequently, so mine water damage has become an important geological disaster in mines . To prevent the above-mentioned water inrush accidents, it is necessary to accurately analyze the water content of the coal seam floor rock and the degree of structural damage before mining, so as to predict the water inrush point with a large amount of water inrush, so as to avoid water inrush accidents. At least catastrophic water inrush ac...

AI Technical Summary

Problems solved by technology

However, the above two high-density electrical instruments are not equipped with a computer system, so the sampling speed is low, so large sample sampling cannot be performed

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