Frequency dispersion curve solving method and device for multi-medium model

A dispersion curve and multi-media technology, applied in the field of geological exploration, can solve problems such as dispersion curves that cannot be applied to solve different medium models, and achieve the effect of strong versatility

Pending Publication Date: 2021-11-19
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a method and device for solving the dispersion curve of a multi-media model, aiming at solving the problem that the prior art cannot be applied to solve the dispersion curve of different media models

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  • Frequency dispersion curve solving method and device for multi-medium model
  • Frequency dispersion curve solving method and device for multi-medium model
  • Frequency dispersion curve solving method and device for multi-medium model

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[0040] The present invention provides a method and device for solving a dispersion curve of a multi-media model. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0041] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be understood that...

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Abstract

The invention discloses a frequency dispersion curve solving method and device for a multi-medium model. The method comprises the following steps: automatically judging a medium model according to input model data, and selecting corresponding vibration modes; under a theoretical framework of a generalized anti-transmission coefficient method, constructing a duration function family of the vibration modes; searching all vibration modes in the medium model based on the duration function family, connecting the vibration modes with the same order, and drawing a frequency dispersion curve. According to the method provided by the invention, various different medium models can be flexibly processed, and surface wave frequency dispersion curves required by users can be stably, quickly, and precisely calculated, so that the method is universally applied; The invention differs from the prior art in the method, adaptable medium models (5 medium models and plate conditions are additionally included), medium particularity, and solvable vibration mode types (Rayleigh waves, Love waves, and sound waves), and any combination of the three aspects is within the protection range of the invention.

Description

technical field [0001] The invention relates to the technical field of geological survey, in particular to a method and device for solving a dispersion curve of a multi-media model. Background technique [0002] The solution of surface wave dispersion curve is very important for seismic exploration (such as inversion of underground medium model, geological survey, etc.), nondestructive testing of materials, synthetic vibration records, etc. For the calculation of the eigenmodes of the surface wave (that is, the solution of the dispersion curve), the existing technical methods include two types, one is to make various improvements or corrections based on the Haskell matrix (or propagation matrix method); the other is Numerical integration method, but neither of them can completely solve the problem of high-frequency numerical overflow (that is, loss of high-frequency precision). [0003] Another method for computing the eigenmodes of surface waves is the generalized reflecta...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/10
CPCG06F17/10
Inventor 吴勃陈晓非
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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