Quick identification method and device for two-parameter time domain electromagnetic weak polarization effect

A polarization effect, time-domain electromagnetic technology, which is used in electric/magnetic exploration, measurement devices, and re-radiation of sound waves, etc., can solve problems such as unfavorable underground polarization information grasping and no consideration of weak polarization polarization geological conditions. , to achieve the effect of reducing exploration cost, fast and accurate identification, and improving accuracy
CN110907997APending Publication Date: 2020-03-24JILIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JILIN UNIV
Publication Date
2020-03-24

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Abstract

The invention relates to a quick identification method and device for a two-parameter time domain electromagnetic weak polarization effect, and aims at solving the problems that weak polarization response characteristics in time domain electromagnetic detection data are difficult to identify, the interpretation precision is low and the like. Two parameters which have the greatest influence on a polarization identification result are screened; a polarization effect rapid classification model is established based on a support vector machine by taking the parameter with the maximum influence as input and whether polarization occurs or not as output; and rapid identification is carried out on the measured data through a polarization effect rapid classification model. According to the method, the weak polarization response in electromagnetic detection can be quickly and accurately recognized only by extracting the two parameters, and the accuracy of electromagnetic data interpretation is improved.
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Description

technical field

[0001] The invention relates to a method for identifying polarization effects, in particular to a method and device for quickly identifying double-parameter time-domain electromagnetic weak polarization effects. Background technique

[0002] Induced Polarization Effects (Induced Polarization Effects, IP) is an important electrochemical phenomenon, which usually exists in metal ores, disseminated mineral resources and water-bearing geology, and has extremely high economic value, mainly manifested in the rapid attenuation of electromagnetic signals , Sign inversion phenomenon. The method of multi-parameter joint interpretation of geology using polarization data has also been widely used in the search for metal ores, water resources, geothermal resources, karst karst and other wider fields, and has become a research hotspot for scholars at home and abroad. However, as to whether the unknown geological structure has polarization characteristics, the conclusion i...

Claims

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