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Shallow transverse high-resolution Rayleigh wave exploration method and system

A high-resolution, horizontal technology, applied in the field of Rayleigh wave exploration, can solve the problem of low horizontal resolution

Pending Publication Date: 2020-10-30
SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the F-K transform method is commonly used to extract the dispersion curve at home and abroad, and the linear Radon transform (f-v) method is also used to extract the dispersion curve. The horizontal average processing is done below, so its horizontal resolution is low, and it is mainly used for vertical layering

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  • Shallow transverse high-resolution Rayleigh wave exploration method and system
  • Shallow transverse high-resolution Rayleigh wave exploration method and system
  • Shallow transverse high-resolution Rayleigh wave exploration method and system

Examples

Experimental program
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Embodiment 1

[0061] In one or more embodiments, a shallow lateral high-resolution Rayleigh wave survey method is disclosed, comprising the steps of:

[0062] (1) Obtain seismic wave data in the area to be measured;

[0063] Specifically, establish a Rayleigh wave exploration and observation system for seismic wave data collection;

[0064] The Rayleigh wave exploration and observation system includes a shallow seismometer, a number of geophones for receiving the vertical vibration component of the seismic wave (it converts the vibration velocity of the medium particle caused by the seismic wave into a voltage signal) and a seismic source, etc., along the ground measurement line according to a certain Spacing N geophones (which are connected to the large line) are vertically inserted into the soil. The whole composed of N geophones arranged on the survey line is called an arrangement, and the distance between two adjacent geophones is called the track spacing. The distance between the point ...

Embodiment 2

[0106] In one or more embodiments, a shallow lateral high resolution Rayleigh wave survey system is disclosed, comprising:

[0107] A device for acquiring seismic wave data in the area to be measured;

[0108] A device for extracting Rayleigh wave data from said seismic wave data;

[0109] A device for calculating the dispersion curve of Rayleigh waves using the adjacent track phase difference method;

[0110] A device for obtaining the depth profile corresponding to the Rayleigh wave phase velocity by using the depth-half-wavelength conversion principle based on the obtained dispersion curve;

[0111] It is a device used to interpret the section according to the geological task, and obtain the quality of the foundation reinforcement components and the strength of the geological anomaly.

[0112] It should be noted that the specific implementation manner of the above-mentioned device is realized by the method disclosed in the first embodiment, and details are not repeated he...

Embodiment 3

[0114] In one or more embodiments, a terminal device is disclosed, including a server, the server includes a memory, a processor, and a computer program stored on the memory and operable on the processor, and the processor executes the The program implements the shallow lateral high-resolution Rayleigh wave exploration method in Embodiment 1. For the sake of brevity, details are not repeated here.

[0115] It should be understood that in this embodiment, the processor can be a central processing unit CPU, and the processor can also be other general-purpose processors, digital signal processors DSP, application specific integrated circuits ASIC, off-the-shelf programmable gate array FPGA or other programmable logic devices , discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

[0116] The memory may include read-only memory and random...

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Abstract

The invention discloses a shallow transverse high-resolution Rayleigh wave exploration method and system. The method comprises the steps that: seismic wave data in a to-be-measured area are acquired;extracting Rayleigh wave data from the seismic wave data; calculating a frequency dispersion curve of Rayleigh waves by adopting an adjacent channel phase difference method; based on the obtained frequency dispersion curve, obtaining a depth profile corresponding to the Rayleigh wave phase velocity by adopting a depth-half wavelength conversion principle; and interpreting the profile according toa geological task to obtain the quality of a foundation reinforcing member and the strength of a geological anomalous body. According to the method and system of the invention, quality detection or evaluation can be carried out on the foundation reinforcing member (such as a mixing pile gravel pile, a dam diaphragm wall and the like) accurately; and the transverse resolution capability of the underground small geological anomalous body can also be improved.

Description

technical field [0001] The present invention relates to the technical field of Rayleigh wave exploration, in particular to a shallow horizontal high-resolution Rayleigh wave exploration method and system. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] The Rayleigh wave method is a shallow exploration method that has emerged in recent years. Due to its high efficiency in field construction, strong energy in shallow layers, and little influence by the site, it has great advantages in vertical and horizontal resolution and shallow detection accuracy. Therefore, it is widely used in shallow surface geotechnical engineering investigation and non-destructive testing, and occupies an important position in many engineering geophysical methods. Because Rayleigh wave propagation in layered media has dispersion characteristics, that is, the wave ve...

Claims

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Application Information

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IPC IPC(8): G01V1/00G01V1/18G01V1/30
CPCG01V1/00G01V1/181G01V1/306G01V2210/624
Inventor 孙旭张学强王基文江峻毅杨庆义刘浩孙长帅焦学文任传建
Owner SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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