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Rigidity matrix calculation method of point source seismic response for seismic prediction

A stiffness matrix, seismic prediction technology, applied in the field of seismic exploration, can solve problems such as numerical instability, difficulty in singular point integration, and achieve the effect of reducing difficulty

Pending Publication Date: 2020-11-24
TIANJIN UNIV
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Problems solved by technology

[0004] At present, the existing methods of ground motion synthesis based on the Green's function in the frequency-wavenumber domain mainly include the Haskell transfer matrix method and the generalized anti-transmission coefficient matrix method. The matrix method of anti-transmission coefficient has difficulty in singular point integration

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  • Rigidity matrix calculation method of point source seismic response for seismic prediction
  • Rigidity matrix calculation method of point source seismic response for seismic prediction
  • Rigidity matrix calculation method of point source seismic response for seismic prediction

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Embodiment Construction

[0021] In order to further understand the content, characteristics, and efficacy of the present invention, it is taken from the following examples and will be described in detail with reference to the following:

[0022] Chinese and English in English are as follows:

[0023] Fourier Chinese Interpretation is Fourier.

[0024] Hankel Chinese Interpretation is Hankl.

[0025] Fourier-Hankel Chinese Interpretation is Fourier - Hankl.

[0026] BESSEL Chinese Interpretation is Beser.

[0027] See Figure 1 to 3 A stiffness matrix calculation method for a dot source seismic reaction for seismic prediction, suppose there is a bitmap source in the hierarchy medium, and the layer of the dislocation point source is defined as a point source dislocation layer; set point source bit The mismatch is fixed, and the power response and fixed end surface in the position of the position of the position are obtained; the fixed end surface reaction is reversed to the thermal response of the fixed end ...

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Abstract

The invention discloses a rigidity matrix calculation method for point source seismic response for seismic prediction, and the method comprises the steps: supposing that a point source dislocation layer is fixed, and solving a dynamic response and a fixed end face counterforce in the dislocation source layer; reversely applying counter-force of the fixed end face to the layered half space to obtain dynamic response of the fixed end face; superposing the dynamic response in the dislocation source layer and the dynamic response of the fixed end surface to obtain a total dynamic response; and combining the total dynamic response with a seismic source time function, carrying out Fourier-Hankel inverse transformation, and obtaining a seismic map of three components in a time-space domain. The method is a semi-analytical method based on combination of an accurate dynamic stiffness matrix and integral transformation, and has the advantages that the precision is not limited by the layer thickness, and error accumulation does not exist.

Description

Technical field [0001] The present invention relates to a seismic exploration technology, and in particular, to a stiffness matrix calculation method for a seismic source seismic reaction for seismic prediction. Background technique [0002] At present, in recent years, in the context of global earthquakes, the development of "resilience cities", due to fewer number of strong earthquake observation platform stations, strong vibration records are difficult to meet demand, for these lack of strong vibration records, Seismic synthesis is an effective way to estimate the future earthquake production of strong ground movement, and precise solution to the seismic response of the point-to-source seismic response is its key link. [0003] Synthesis research, which is solved by a point-to-earth seismic reaction, has a high requirements for calculating resources, and accurate and efficient numerical calculation methods are the smooth development of success. At present, the three-dimensiona...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F17/16G06F17/14G01V1/28G06F119/14
CPCG06F30/20G06F17/16G06F17/14G01V1/282G01V1/286G06F2119/14G01V2210/48G01V2210/66
Inventor 巴振宁吴孟桃梁建文
Owner TIANJIN UNIV
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