Method for processing full-space transient electromagnetic data of mine

A transient electromagnetic, full-space technology, applied in the field of geophysical exploration, can solve the problems of large amount of data, complex forward modeling, not involving mine transient electromagnetic inversion, etc., to achieve high optimization efficiency and improve data processing quality. Effect

Active Publication Date: 2019-04-09
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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Problems solved by technology

[0012] The Chinese invention patent with the publication number CN105589108A ​​discloses a transient electromagnetic fast three-dimensional inversion method based on different constraints. It adopts data processing and three-dimensional forward modeling method based on transient electromagnetic moment transformation, which solves the problems faced by the current three-dimensional inversion. The problem of large amount of data and complicated forward modeling; the constraints of the time constant vector in the inversion are constructed, and the optimization algorithm is used to ite

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  • Method for processing full-space transient electromagnetic data of mine
  • Method for processing full-space transient electromagnetic data of mine
  • Method for processing full-space transient electromagnetic data of mine

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[0047] In this embodiment, firstly, a method for interpreting transient electromagnetic data in a mine space is provided. The method will be described in detail below in conjunction with the accompanying drawings.

[0048] The method for interpreting the full-space transient electromagnetic data of a mine comprises the following steps:

[0049] (1) Data preprocessing;

[0050] The data recorded by mine transient electromagnetic detection often contains some interference, and the original data needs to be processed technically, including deleting bad sectors and filtering to remove noise, etc., to eliminate or reduce the influence of interference factors.

[0051] (2) Set the inversion parameters of particle swarm algorithm;

[0052] According to the requirements of the particle swarm optimization algorithm, the number of particles, the maximum allowable number of inversion iterations, the size of the inversion error, the construction of inertia factors, etc. are set to meet ...

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Abstract

The invention relates to a transient electromagnetic data processing method and belongs to the technical field of geophysical exploration, in particular to a method for processing full-space transientelectromagnetic data of a mine. According to the method, an inversion processing technology is introduced into mine transient electromagnetic data processing, thereby improving the data processing quality. According to the method in the invention, a combined inversion method is adopted so that not only the problem that an initial model needs to be manually provided for a damping least square method is solved, but also the advantage that a particle swarm can be subjected to global optimization is fully utilized; a combined algorithm is used for providing an initial model for the damping leastsquare method by means of a particle swarm algorithm; and the characteristics of nonlinear inversion of the particle swarm algorithm and the advantage of high damping least square optimization efficiency are taken into account.

Description

technical field [0001] The invention relates to a transient electromagnetic data processing method, which belongs to the technical field of geophysical exploration, in particular to a mine full-space transient electromagnetic data processing method. Background technique [0002] As a technical means to solve geological problems by using physical methods, geophysical prospecting technology has been widely used in the field of geological prospecting. Transient electromagnetic method is a kind of geophysical exploration method. It uses the law of electromagnetic induction as the detection principle, and detects and infers its electrical characteristics by receiving the induced secondary field generated by geological anomalies. [0003] There are many working devices for transient electromagnetic method, which can be divided into aviation transient electromagnetic method, ground transient electromagnetic method, ground well transient electromagnetic method and mine transient ele...

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Application Information

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IPC IPC(8): G01V3/38G06F17/50G06N3/00
CPCG01V3/38G06N3/006G06F30/20
Inventor 李明星冯宏王鹏姚伟华程建远
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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