基于压电效应的大地极化声子模拟研究

doi:10.11720/wtyht.2021.1279

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摘要

大地极化声子测深技术是一种利用自然电磁辐射的被动源地球物理电磁勘探方法。本文从岩石的压电效应出发,导出了岩石压裂过程中产生的电磁辐射表达式,分析了电磁辐射频率的影响因素,通过数值模拟研究了压裂电磁辐射的频率响应特征。结果表明:基于岩石压电效应的大地极化声子测深具有与其他电磁探测方法相似的电磁响应特性,大地极化声子测深具有潜在的应用价值。

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	吴洋
	严家斌

关键词 ：大地极化声子, 压电效应, 电磁辐射, 正演

Abstract：

Geodetic polarization exploration technology is a passive source geophysical electromagnetic exploration method using natural electromagnetic radiation. Based on the piezoelectric effect of rock, the expression of electromagnetic radiation produced in the process of rock fracturing was derived. The influence factors of electromagnetic radiation frequency were analyzed, and the frequency response characteristics of electromagnetic radiation from fracturing were studied by numerical simulation. The results show that the geodetic polarization exploration technology based on the piezoelectric effect of rock has similar electromagnetic response characteristics to other electromagnetic detection methods, and the geodetic polarization exploration technology has potential application value.

Key words： geodetic polarization piezoelectric effect electromagnetic radiation forward modeling

收稿日期: 2020-05-27 修回日期: 2021-03-12 出版日期: 2021-06-20

ZTFLH:

P631

基金资助:国家重点研发计划项目“三维精细探测与深部矿体定位—深部多方法多参数联合探测及反演解释技术”(2018YFC0603903)

通讯作者: 严家斌

作者简介: 吴洋(1998-),男,硕士研究生,主要研究方向为电磁法正演。Email: wuyangcsu@163.com

引用本文:

吴洋, 严家斌. 基于压电效应的大地极化声子模拟研究[J]. 物探与化探, 2021, 45(3): 742-749.
WU Yang, YAN Jia-Bin. A study of the simulation of geodetic polarization based on piezoelectric effect. Geophysical and Geochemical Exploration, 2021, 45(3): 742-749.

链接本文:

https://www.wutanyuhuatan.com/CN/10.11720/wtyht.2021.1279 或 https://www.wutanyuhuatan.com/CN/Y2021/V45/I3/742

Fig.1 电磁辐射频率随岩石参数的变化

Fig.2 倾斜裂隙模型示意

Fig.3 裂隙电场幅值随倾角变化

Fig.4 裂隙电场矢量随倾角变化

Fig.5 组合裂隙模型示意

Fig.6 组合裂隙电场幅值

Fig.7 组合裂隙电场矢量

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