Method, device and system for establishing metallogenic model based on controlled source audio magnetotelluric sounding

An audio magnetotelluric, terrain model technology, applied in the field of geophysical exploration, can solve problems such as analysis

Active Publication Date: 2022-06-17
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

In the past, inferring ore-forming geological models through geological engineering often required a large number of geological drill holes and other geological information; there were also prospecting through geophysical technology, but due to the limitation of geophysical technology, they could not analyze from the metallogenic mechanism and could only provide electrical data. With the rapid development of geophysical methods and technologies, it has also greatly promoted the study of metallogenic models, providing scientific evidence for the search for deep deposits

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  • Method, device and system for establishing metallogenic model based on controlled source audio magnetotelluric sounding
  • Method, device and system for establishing metallogenic model based on controlled source audio magnetotelluric sounding
  • Method, device and system for establishing metallogenic model based on controlled source audio magnetotelluric sounding

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Embodiment 1

[0081] As the CSAMT method is used in field construction, the transmitter cannot be placed far away from the receiver due to the limitation of transmitter power. Generally speaking, the transceiver distance is 4-6 times of the detection depth. The maximum sending and receiving distance of the transmitter is 8-15km, so the collected data is the data of the whole area (including the far area, the transition area and the near area). The CSAMT observation data is inverted using the belt-topographic belt-source inversion software, and the resistivity value of the model is finally obtained; the inversion resistivity contour map is drawn for the inversion resistivity value using the contour map software; The CSAMT inversion resistivity contour map is compared with the known geological profiles; the morphological characteristics of the resistivity contour inversion in CSAMT for different geological metallogenic models are determined; and the CSAMT inversion resistivity contour morpholo...

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Abstract

This application proposes a method, device and system for establishing a metallogenic model based on the controlled source audio magnetotelluric sounding method. The method includes: setting the initial pure terrain model according to the terrain elevation, inverting the CSAMT observation data, and obtaining the The resistivity value of the pure terrain model; the resistivity value obtained by inversion is processed to form a CSAMT inversion resistivity contour map; the CSAMT inversion resistivity contour map and the known mineral geology The profile is compared and analyzed to determine the morphological characteristics of contact zone ore and interlayer ore in the CSAMT inversion resistivity contour map; according to the CSAMT inversion resistivity contour morphological characteristics, it is judged that the hydrothermal type Based on the geological environment of the ore body and the results of contact zone-type ore and interlayer ore, a metallogenic model is established. The invention correctly judges the geological environment that may generate hydrothermal ore bodies and the method for contacting zone-type ore and interlayer ore, thereby establishing a metallogenic model.

Description

technical field [0001] The invention relates to the field of geophysical exploration, in particular to a method, a device and a system for establishing a metallogenic model based on a controllable source audio frequency magnetotelluric sounding method. Background technique [0002] With the rapid development of my country's economy, the demand for mineral resources has also increased. In order to meet the growing demand for minerals, the discovery of new minerals, the search for blind ores in existing old mines and deep hidden new mines, and the increase of mineral resources reserves are the current mineral resources. The focus of resource exploration. Studying the metallogenic model of the existing mining area has theoretical guiding significance for ore prospecting and exploration, and establishing a metallogenic model that conforms to the reality has practical significance for the discovery of deep hidden ore. In the past, inferring metallogenic geological models through ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/08
CPCG01V3/083
Inventor 雷达底青云付长民王若安治国真齐辉任浩
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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