| 岩石的声衰减与声频谱的变化 |
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| 引用本文： | 苏道宁,冯世瑄.岩石的声衰减与声频谱的变化[J].中国石油大学学报(自然科学版),1986(2). |
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| 作者姓名： | 苏道宁 冯世瑄 |
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| 作者单位： | 华东石油学院物理教研室
(苏道宁)，华东石油学院物理教研室(冯世瑄) |
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| 摘 要： | 本文利用脉冲声波的频谱分析方法对岩石的声衰减进行了测量,得出声衰减对声波频率的依赖关系。认为在频率不太高的情况下,均匀岩石的声衰减主要由内摩擦和瑞利散射造成,衰减系数α可用频率的一次方与四次方的和表示。在频率较低的情况下,可以认为声衰减近似地与频率的一次方成正比。
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| 关 键 词： | 声波 声衰减测量 频率 脉冲 频谱分析 |
ULTRASONIC ATTENUATION OF ROCKS AND SPECTRUM VARIATION |
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| Su Daoning Feng Shixuan.ULTRASONIC ATTENUATION OF ROCKS AND SPECTRUM VARIATION[J].Journal of China University of Petroleum,1986(2). |
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| Authors: | Su Daoning Feng Shixuan |
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| Institution: | Su Daoning Feng Shixuan |
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| Abstract: | Ultrasonic attenuation of rocks is measured with ultrasonic spectral analysis method. The correlativity of ultrasonic attenuation and the frequency of acoustic wave has been obtained in this paper. The attenuation coefficient of homogeneous rock varies directly with the frequency. It shows that the ultrasonic attenuation can be caused by the internal friction of the rocks and Rayleigh wave scattering in the case of low frequency. |
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| Keywords: | Sound waves Acoustical attenuation measurements Frequency Frequency spectrum analysis Pulse |
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