Two-dimensional electrical prospecting method based on joint profile

A combined profile and electrical prospecting technology, applied in the field of electrical prospecting, can solve the problem of low judgment accuracy of geological anomalies

Inactive Publication Date: 2019-09-06
CENT SOUTH UNIV
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  • Application Information

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Problems solved by technology

However, based on the current data processing method of the combined section electrical method, the accuracy of the distribution range of the geological anomaly, especially the width of the anomaly is not high. The parameters are further improved to improve the judgment accuracy of the distribution range of geological anomalies, especially the width of anomalies

Method used

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  • Two-dimensional electrical prospecting method based on joint profile
  • Two-dimensional electrical prospecting method based on joint profile
  • Two-dimensional electrical prospecting method based on joint profile

Examples

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Embodiment 1

[0020] Such as figure 2 As shown in Fig. 1 , it is assumed that a joint profile is to be carried out on a survey line of 20 length units, and a section with a length of 3 length units buried under the position of 9 to 12 length units, a buried depth of 1 length unit at the top surface, and a thickness of 3 length units For the high-resistance anomalous body of the unit, the power supply electrode distance of the joint section is 2 length units, the measuring point spacing is 1 length unit, and the MN length is 1 length unit.

[0021] use figure 1 In the flow of the method shown, firstly, according to the working parameters of the above-mentioned joint section, the apparent resistivity in two directions of the conventional joint section of each record point is obtained on the survey line, that is, and 20 apparent resistivity data were obtained for each parameter. Among them, Oi is the number of the recording point, Ai and Bi are the numbers of the power supply point corre...

Embodiment 2

[0029] Assuming that a joint profile is to be carried out on a survey line of 20 length units, a low-lying low-lying structure with a length of 5 length units, a depth of 1 length unit at the top surface, and a thickness of 3 length units is buried below the position of 8 to 13 length units. For the abnormal resistance body, the distance between the power supply and the joint section is 2 units of length, the distance between measuring points is 1 unit of length, and the length of MN is 1 unit of length.

[0030] use figure 1In the flow of the method shown, firstly, according to the working parameters of the above-mentioned joint section, the apparent resistivity in two directions of the conventional joint section of each record point is obtained on the survey line, that is, and 20 apparent resistivity data were obtained for each parameter. Among them, Oi is the number of the recording point, Ai and Bi are the numbers of the power supply point corresponding to the recordin...

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Abstract

The invention provides a two-dimensional electrical prospecting method based on joint profile. The method provided by the invention obtains electrical data such as resistivity and polarizability in two directions of all recording points of a certain measuring line based on the joint profile method in the electrical prospection, separately performs overall treatment such as the absolute value of anaverage value and a difference on the electrical data such as resistivity and polarizability with the same recording point and the same pole pitch in two directions, mainly selects the maximum valueof the absolute value of the difference of the relevant electrical parameters to determine the abnormal width of the abnormal body, and carries out comprehensive interpretation, so as to improve the exploration effect of the joint section method without increasing the workload in the field. The method can improve the electrical prospecting effect and precision of the joint section method and increase the recognition degree of the geological anomaly body.

Description

technical field [0001] The invention belongs to the field of electrical prospecting, and relates to a two-dimensional electrical prospecting method based on joint profiles. Background technique [0002] At present, the joint section in electrical prospecting is better for judging the occurrence of underground geological anomalies, and it has been widely used in electrical prospecting. The parameters of the isoelectric method can theoretically obtain symmetrical quadrupole profile data, which can further improve the judgment accuracy of underground geological anomalies. However, based on the current data processing method of the joint section electrical method, the accuracy of the distribution range of the geological anomaly body, especially the width of the anomaly body, is not high. The parameters are further improved to improve the judgment accuracy of the distribution range of geological anomalies, especially the width of anomalies. Contents of the invention [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/38
CPCG01V3/38
Inventor 刘春明郭振威胡隆运袁昀希
Owner CENT SOUTH UNIV
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