ANALYSIS OF COMBINED EXCITATION EFFECT OF SHEAR-WAVE VIBROSEIS

HUANG Zhiqiang; YOU Zhengtao; LI Gang; FU Mingwei; WANG Ruohao; SHUAI Jun; ZHANG Guoxu

doi:10.16579/j.issn.1001.9669.2025.05.007

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ANALYSIS OF COMBINED EXCITATION EFFECT OF SHEAR-WAVE VIBROSEIS

·Vibration·Noise·Monitoring·Diagnosis· | 更新时间：2025-05-19

- ANALYSIS OF COMBINED EXCITATION EFFECT OF SHEAR-WAVE VIBROSEIS
- Journal of Mechanical Strength Vol. 47, Issue 5, Pages: 55-62(2025)
- 作者机构：
  
  西南石油大学机电工程学院，成都 610500
- 作者简介：
  
  HUANG Zhiqiang, E-mail: huangzq@swpu.edu.cn
- 基金信息：
  
  National Natural Science Foundation of China(41902326);Science and Technology Program of Sichuan Province(22GJHZ0284);Nanchong City & Southwest Petroleum University Science and Technology Strategic Cooperation Special Fund(SXHZ048);Enterprise Horizontal Cooperation Project(JSTKY-22-002)
- DOI：10.16579/j.issn.1001.9669.2025.05.007
  CLC： TE132
- Received：24 October 2023，
  
  Revised：17 November 2023，
  
  Published：15 May 2025
- 稿件说明：
移动端阅览
黄志强，游正涛，李刚，等. 横波可控震源组合激振效果分析［J］. 机械强度，2025，47（5）：55-62.

HUANG Zhiqiang，YOU Zhengtao，LI Gang，et al. Analysis of combined exeffect of shear-wave vibroseis［J］. Journal of Mechanical Strength，2025，47（5）：55-62.
黄志强，游正涛，李刚，等. 横波可控震源组合激振效果分析［J］. 机械强度，2025，47（5）：55-62. DOI： 10.16579/j.issn.1001.9669.2025.05.007.

HUANG Zhiqiang，YOU Zhengtao，LI Gang，et al. Analysis of combined exeffect of shear-wave vibroseis［J］. Journal of Mechanical Strength，2025，47（5）：55-62. DOI： 10.16579/j.issn.1001.9669.2025.05.007.

摘要

受振动器结构限制，横波可控震源激振时存在下传大地能量低和横波信号下传深度浅等问题。为此，通过三维有限元数值模拟创新性地研究了不同组合的横波可控震源振动器对激振效果的影响。首先，基于三维九分量资料和两大组合类型，考虑了8种组合横波可控震源振动器激振方式，建立了振动器-大地有限元模型，构建了组合横波可控震源振动器激振效果评价体系；其次，基于该评价体系，详细地分析了各种横波可控震源振动器组合激振方式对大地的下传能量、横波信号下传深度和组合激发波间的相互干涉影响。结果表明，相较于单个横波可控震源，两台SHY横波可控震源并排组合同向激振时，传入大地能量提升86.36%，大地粒子位移振幅平均提升73.40%；两台SHX横波可控震源单排组合同向激振时，传入大地能量提升97.48%，大地粒子位移振幅平均提升58.61%，较大幅度地提升了激振效果。研究成果可为提升横波可控震源激振效果提供指导，也可为横波可控震源组合激发设计研究提供参考。

Abstract

Limited by the vibrator structure

there are some problems such as low down-going earth energy and shallow down-going depth of shear-wave signals when the shear-wave vibroseis is excited. Therefore

the influence of different combinations of shear-wave vibroseis vibrators on the excitation effect was innovatively studied through the three-dimensional finite element numerical simulation. Firstly

based on three-dimensional nine-component data and two types of combinations

eight modes of vibration excitation of combined shear-wave vibroseis were considered

a vibrator-earth finite element model was established

and an evaluation system of the vibration excitation effect of the combined shear-wave vibroseis was constructed. Secondly

based on this evaluation system

the influence of the various combined excitation modes of the shear-wave vibroseis on the downward energy of the earth

the downward depth of shear-wave signals and the mutual interference between combined excitation waves was analyzed in detail. The results show that

compared with a single shear-wave vibroseis

when two SHY shear-wave vibroseises are arranged side by side for the normal excitation

the incoming earth energy is increased by 86.36%

and the displacement amplitude of earth particles is increased by 73.40% on average. When two SHX shear-wave vibroseises are excited in the normal direction

the incoming earth energy increases by 97.48%

and the displacement amplitude of earth particles increases by 58.61% on average

which greatly improves the excitation effect. The research results can provide the guidance for improving the excitation effect of the shear-wave vibroseis and the reference for the design of combined excitation mode of the shear-wave vibroseis.

关键词

Keywords

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