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Radiodetector for seismic exploration and transrectification system thereof

A seismic exploration and geophone technology, applied in the direction of seismic signal receivers, etc., can solve problems such as small dynamic range, and achieve the effect of improved performance and large frequency band

Inactive Publication Date: 2008-07-30
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The object of the present invention is to provide a geophone for seismic exploration and a geophone system thereof, so as to solve the defect of small dynamic range in the prior art

Method used

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  • Radiodetector for seismic exploration and transrectification system thereof
  • Radiodetector for seismic exploration and transrectification system thereof
  • Radiodetector for seismic exploration and transrectification system thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Figure 4A Shown is the schematic diagram of the geophone for seismic exploration of Embodiment 1 of the present invention, Figure 4B Shown is a schematic diagram of the proof mass of the geophone for seismic exploration in Embodiment 1 of the present invention, Figure 4C What is shown is a schematic diagram of the shrapnel of the geophone for seismic exploration in Embodiment 1 of the present invention. Such as Figure 4A , Figure 4B , Figure 4C As shown, the geophone for seismic exploration in this embodiment is a fiber Bragg grating direct tension-compression geophone, wherein the metallized grating (Bragg grating bandwidth less than 0.2nm, length less than 5mm) is engraved on the optical fiber 405, and one end thereof Bonded to the vibrating masses 404, 406, the mass M of the masses is figure 1 The sum of 404 and 406 in the above grating, the other end of the above-mentioned grating is bonded to the adjustment block 410, and finally connected to the detecto...

Embodiment 2

[0064] Figure 10A Shown is the schematic diagram of the geophone for seismic exploration of Embodiment 2 of the present invention, Figure 10B Shown is a schematic diagram of the proof mass of the geophone for seismic exploration in Embodiment 2 of the present invention, Figure 10C What is shown is a schematic diagram of the shrapnel of the geophone for seismic exploration in Embodiment 2 of the present invention.

[0065] Such as Figure 10A , Figure 10B , Figure 10C As shown, the detector for seismic exploration in this embodiment is a fiber Bragg grating elastic beam detector. In the fiber Bragg grating elastic beam detector, the fiber Bragg grating 1004 is pasted on the shrapnel 1001, 1007, and the shrapnel 1001, 1007 are fixed in the shell 1009, and the mass consists of two parts, namely Figure 10B For 1005 and 1006, the quality of the mass block is M, and the material of the mass block is stainless steel, which ensures the lateral non-directionality of the geop...

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PUM

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Abstract

The invention provides a geophone for seismic exploration and geophone system thereof. The geophone comprises an optical fiber Bragg grating, a mass block, an elastic component and a geophone shell, wherein the optical fiber Bragg grating is connected with the mass block; the mass block is connected with the geophone shell via the elastic component and used for changing the period or refractive index of the optical fiber Bragg grating. The geophone system of the invention has ideal frequency band and a dynamic range as large as possible with respect to the seismic signal response.

Description

technical field [0001] The invention relates to the technical field of seismic exploration, in particular to the technical field of wave detection in seismic exploration, in particular to a wave detector for seismic exploration and a wave detection system thereof. Background technique [0002] At present, seismic exploration technology is not only widely used in the exploration of oil and mineral resources, but also in the investigation of geological disasters such as landslides, ground subsidence, etc., and hydrological surveys such as finding water sources, as well as engineering quality detection such as dam quality inspection, etc. aspect. [0003] Seismic exploration technology refers to the phenomenon of elastic reflection, refraction, diffraction or dispersion of rocks on seismic waves and their dynamic characteristics, and through the propagation characteristics of seismic waves, the seismometer unit is used to collect data from underground target objects on the grou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/18
Inventor 陶果
Owner CHINA UNIV OF PETROLEUM (BEIJING)