Electrical source transient electromagnet ground-air detection method

Abstract

The invention relates to an electrical source transient electromagnet ground-air detection method. The electrical source transient electromagnet ground-air detection method comprises the steps that a long grounding wire is adopted as an emitting source, and a helicopter or an unmanned aerial vehicle carries a receiving coil for data collection; observation data are processed according to a full-domain apparent resistivity method, qualitative interpretation on deep geological targets is finished, and profile information such as the attitude, extending direction and scale of the geological targets is obtained; ground-air data are interpreted and processed according to a transient electromagnetic wave field transform method, a three-dimensional migration imaging technology and an inverse synthetic aperture method, fine detection of the deep targets is finished, and detailed information such as the depth, shape and electrical structures of the deep geological structure is obtained. The electrical source transient electromagnet ground-air detection method can achieve electromagnetic detection rapidly on a large scale, the deep geological targets can be detected in a detailed mode, and the accurate and detailed geological information of the deep geological targets can be obtained.

Description

technical field [0001] The invention relates to the field of geophysical exploration, in particular to a transient electromagnetic detection method and interpretation technology. Background technique [0002] With the rapid development of the national economy, the consumption and demand of mineral resources have entered a stage of sustained high growth, and the contradiction between supply and demand has become increasingly serious. The eastern plain area is conducive to exploration and has been developed earlier. Due to long-term development, the problem of resource depletion has emerged. The insufficient supply of mineral resources has become a bottleneck restricting my country's economic development. In order to maintain the rapid development of the national economy, it is urgent to find replacement areas for mineral resource supply and resource strategic reserve bases. First of all, the Qinghai-Tibet Plateau straddles the two major metallogenic domains of Paleo-Asia and...

AI Technical Summary

Problems solved by technology

When the side length is large (greater than 300 meters), in order to improve work efficiency, a large fixed source device can be used for measurement, but the interpretation method of the large fixed source is more complicated than that of the center loop. At present, some data on the transient electromagnetic of the large fixed source have been proposed Explanation method

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