Hic-shaped three-dimensional electrical prospecting method
A three-dimensional electrical and electrical exploration technology, which is applied in electrical/magnetic exploration, radio wave measurement systems, and sound wave re-radiation, etc., can solve the problems of insignificant improvement in efficiency, large amount of data collection, and low exploration efficiency, etc. Achieve the effect of saving power supply wires, high exploration efficiency, and reducing exploration costs
Active Publication Date: 2018-06-22
CENT SOUTH UNIV
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Problems solved by technology
One-dimensional electrical prospecting is basically not used at present due to low exploration precision and poor effect; two-dimensional electrical prospecting is better than one-dimensional in precision and effect, but the exploration efficiency is lower than the latter; conventional three-dimensional electrical prospecting is divided into complete form, The accuracy and effect of the three-dimensional electrical prospecting with cross and Γ-shaped arrangement of measuring electrodes are better than those of one-dimensional and two-dimensional, but the number of power supply points and measurement points is far more than that of one-dimensional and two-dimensional, which leads to the failure of conventional three-dimensional electrical prospecting. The exploration efficiency is far lower than that of one-dimensional and two-dimensional. Therefore, although this method has a good exploration effect, it is only used in a small amount in some very key exploration areas and the funds are very sufficient.
[0003] Two-dimensional electrical prospecting requires the arrangement of electrical prospecting power supply systems and measurement systems on each prospecting line, and the data of each prospecting line is processed separately as two-dimensional data in the later data processing process. There are real two-dimensional geological anomalies, and more three-dimensional geological anomalies, so the results of two-dimensional electrical exploration are approximate results, resulting in poor exploration results
The amount of data collected by the above two methods is still large, and the efficiency improvement is not obvious
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Embodiment 1
[0061] figure 1 1 is the infinite power supply electrode, 2 is the infinite power supply line, 3 is the electrical prospecting transmitter, 4 is the power supply line connected to the power supply point of the exploration area, and the cross symbol indicated by 5 is the mobile power supply electrode of the electrical prospecting The power supply point, the circular symbol indicated by 6 is the measurement point of the electrical prospecting measuring electrode, and some power supply points overlap with the measurement point.
[0062] Assuming that the length of the three-dimensional electrical prospecting rectangular area in the X direction is L=400 meters, the length in the Y direction is M=400 meters, the distance between measuring points in the X direction in the exploration area is c=40 meters, and the distance between measuring points in the Y direction is d=40 meters. The predicted width of the target body is 100 meters. Since the length of the X-direction measurement li...
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The invention discloses a #-shaped three-dimensional electrical prospecting method, and the method comprises the steps: carrying out the downward supplying of power based on the exploration target body characteristics and landform morphologic prominence characteristics of an electrical prospecting region through the arrangement of #-shaped three-dimensional electrical prospecting power supply points, an electrical prospecting emitter and electrodes of the power supply points; receiving electric field signals of all measurement points at the same time through employing an electrical prospecting receiver; solving the apparent resistivity and induced electrical parameters of all measurement points when each of #-shaped power supply points carries out the power supply, thereby achieving the #-shaped three-dimensional electrical prospecting. The method can iron out the defects that a two-dimensional electrical prospecting method is poorer in effect, and a conventional three-dimensional electrical prospecting method is low in efficiency; the method inherits the high efficiency of the two-dimensional electrical prospecting method and the good effect of the conventional three-dimensional electrical prospecting method, and achieves a better balance between the prospecting efficiency and prospecting effect.
Description
technical field [0001] The invention relates to a three-dimensional electrical prospecting method in the field of prospecting geophysics. Background technique [0002] In the field of exploration geophysics, electrical prospecting is divided into one-dimensional, two-dimensional and three-dimensional electrical prospecting. One-dimensional electrical prospecting is basically not used at present due to low exploration precision and poor effect; two-dimensional electrical prospecting is better than one-dimensional in precision and effect, but the exploration efficiency is lower than the latter; conventional three-dimensional electrical prospecting is divided into complete form, The accuracy and effect of the three-dimensional electrical prospecting with cross and Γ-shaped arrangement of measuring electrodes are better than those of one-dimensional and two-dimensional, but the number of power supply points and measurement points is far more than that of one-dimensional and two-...
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IPC IPC(8): G01V3/02
CPCG01V3/02
Inventor 刘春明赵于前龙西亭柳卓蒋奇云
Owner CENT SOUTH UNIV