基于压电效应的大地极化声子模拟研究  

A study of the simulation of geodetic polarization based on piezoelectric effect

作　　者：吴洋 严家斌[1,2] WU Yang;YAN Jia-Bin(School of Earth Sciences and Information Physics,Central South University,Changsha 410083,China;Key Laboratory of Non-ferrous Resources and Geological Hazard Detection,Changsha 410083,China)

机构地区：[1]中南大学地球科学与信息物理学院,湖南长沙410083 [2]有色资源与地质灾害探查湖南省重点实验室,湖南长沙410083

出　　处：《物探与化探》2021年第3期742-749,共8页Geophysical and Geochemical Exploration

基　　金：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)。

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。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.

关 键 词：大地极化声子 压电效应 电磁辐射 正演 

分 类 号：P631[天文地球—地质矿产勘探]