| 岩石破裂中的电声效应 |
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| 引用本文： | 郭自强, 郭子祺, 钱书清, 李世愚, 刘晓红, 罗祥麟. 岩石破裂中的电声效应[J]. 地球物理学报, 1999, 42(01): 74-83, |
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| 作者姓名： | 郭自强 郭子祺 钱书清 李世愚 刘晓红 罗祥麟 |
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| 作者单位： | 1. 中国科技大学北京研究生院 北京 100039; 2. 中国地震局地球物理研究所 北京 100081; 3. 北京航空技术研究中心 北京100076 |
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| 摘 要： | 利用１６通道高速数据采集系统及三分量声发射换能器对多种岩石样品在单轴压缩及双剪破裂过程中产生的电磁辐射（ＥＭ）和声发射（ＡＥ）及其相互关系进行了实验研究．结果表明，岩样尺寸和岩石矿物成分对电磁辐射的产生及其特性都有较大影响．ＥＭ与ＡＥ的关系具有多样性，既有伴随ＡＥ出现的ＥＭ，还有不伴随ＡＥ出现的ＥＭ．这表明除微破裂产生的电磁辐射外，可能存在产生电磁辐射的非破裂机制．
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| 关 键 词： | 岩石破裂 电声效应 震电关系 |
| 收稿时间： | 1998-08-10 |
ELECTRO- ACOUSTIC EFFECT IN ROCK FRACTURING |
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| GUO ZI-QIANG, GUO ZI-QI, QIAN SHU-QING, LISHI-YU, LIU XIAO-HONG, LUO XIANG-LIN. ELECTRO- ACOUSTIC EFFECT IN ROCK FRACTURING[J]. Chinese Journal of Geophysics (in Chinese), 1999, 42(01): 74-83, |
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| Authors: | GUO ZI-QIANG GUO ZI-QI QIAN SHU-QING LISHI-YU LIU XIAO-HONG LUO XIANG-LIN |
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| Affiliation: | 1. Graduate Schools in beijing, University of Sciences and Technology of China, Beijing 100039,China; 2. Institute of Geophysics, China Seismological Bureau, Beijing 100081, China; 3. Beijing Aeronautical Technology Research Center, Beijing 100076, China |
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| Abstract: | Electromagnetic （EM） and acoustic emissions （ AE） and their relations during the process of fracturing of various rock samples have been studied. The samples werefractured under either uniaxial compression or under double shearing. The data wererecorded using a high-speed recording system with 1 6 frequency channels andthree-component acoustic transducers. Our result shows that the emissions andproperties of EM and AE were affected strongly by the sizes and mineral compositions of rock samples. The relationships between EM and AE emissions were various; for example, some EM emissions were accompanied by AE, but some werenot.Our result suggests that in addition to micro fracturing, there may exist somenonfracturing mechanism responsible for electromagnetic emissions . |
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| Keywords: | Rockfracturing Electric-acousticeffect Seismo-eletromagneticeffect. |
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