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A Numerical Calculation Method of Two-Dimensional Body Magnetic Field

A numerical calculation and magnetic field calculation technology, which is applied in calculation, electric/magnetic exploration, electric digital data processing, etc., can solve the problem of not being able to guarantee the calculation efficiency and calculation accuracy at the same time, and unable to meet the fine inversion imaging of magnetic susceptibility of large-scale magnetic field data , human-computer interaction modeling and interpretation, etc.

Active Publication Date: 2018-09-07
GUILIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0006] Aiming at the problem that the existing two-dimensional volumetric magnetic field numerical calculation method cannot guarantee the calculation efficiency and calculation accuracy at the same time, and cannot meet the needs of large-scale magnetic field data magnetic susceptibility fine inversion imaging, human-computer interaction modeling and interpretation, the present invention provides a two-dimensional Numerical Calculation Method of Body Magnetic Field

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  • A Numerical Calculation Method of Two-Dimensional Body Magnetic Field
  • A Numerical Calculation Method of Two-Dimensional Body Magnetic Field
  • A Numerical Calculation Method of Two-Dimensional Body Magnetic Field

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[0065] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0066] refer to figure 1 , is a flowchart of a numerical calculation method for a two-dimensional body magnetic field, including the following steps:

[0067] Step 1. Representation of the complex two-dimensional body model:

[0068] According to the distribution range of the two-dimensional body, establish a rectangular model including all target areas, and determine the starting position of the rectangular model in the x and z directions, so that the target area including the undulating terrain is completely embedded in the rectangular model;

[0069] Then, according to the actual problem requirements, the rectangular model is evenly divided into several regular small rectangles (such as figure 2 shown), determine the geometric di...

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Abstract

The invention discloses a two-dimensional body magnetic field value calculation method which comprises two main steps, namely complex two-dimensional body model expression and rectangular model magnetic field calculation. Under specific complex two-dimensional body model expression mode conditions, a rectangular two-dimensional body magnetic field overlapping model is established, according to a designed weighting coefficient calculation equation, a rapid one-dimensional discrete convolution algorithm is adopted, and unification of efficiency and precision of magnetic field calculation is achieved. By adopting the method, the problems that a conventional two-dimensional body magnetic field value calculation method cannot simultaneously ensure calculation efficiency and calculation precision and requirements of fine inversion imaging of large-scale magnetic field data magnetic susceptibility and man-machine interaction modeling and interpretation cannot be met can be solved.

Description

technical field [0001] The invention relates to a numerical calculation method for a two-dimensional body magnetic field, in particular to a fast and high-precision numerical calculation method for a two-dimensional body magnetic field with any cross-sectional shape and arbitrary magnetic susceptibility distribution. Background technique [0002] Magnetic prospecting is based on the earth's magnetic field and the difference in magnetic susceptibility as the physical basis. It is a geophysical prospecting method for studying the earth's structure and searching for solid mineral resources. There are no too many conditions. In actual exploration work, such a linear geological body is common: the scale of its strike direction is much larger than the scale perpendicular to its strike direction. For such geological bodies, the actual source distribution can be replaced by a two-dimensional body extending infinitely in the strike direction. [0003] With the development of sensors...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/38G06F19/00
CPCG01V3/38G16Z99/00
Inventor 陈龙伟陈欣熊彬张钱江
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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