| 声波在液浸多层多孔介质中的反射和透射 |
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| 引用本文： | 乔文孝,杜光升,聂士忠.声波在液浸多层多孔介质中的反射和透射[J].中国石油大学学报(自然科学版),1992(4). |
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| 作者姓名： | 乔文孝 杜光升 聂士忠 |
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| 作者单位： | 石油大学勘探系
(乔文孝，杜光升)，石油大学勘探系(聂士忠) |
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| 摘 要： | 根据Biot多孔介质声学理论和多孔介质界面条件,从理论和实验上研究了声波在液浸层状多孔介质中的反射和透射.从导出的计算公式可知,声波的反射、透射系数与声波的频率、入射角及各层多孔介质参数(厚度、孔隙度、弹性参数等)有关.对水浸单层多孔介质板的参数进行的计算表明,当介质板厚与声波波长呈一定比例时,反射系数、透射系数能取得极值.用实验测量方法对这一结论进行了验证,实验结果与理论预测结果相吻合.
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| 关 键 词： | 声波 多孔介质 反射 透射 |
REFLECTION AND TRANSMISSION OF ELASTIC WAVE IN LAYERED POROUS MEDIA IMMERSED IN LIQUID |
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| Qiao Wenxiao Du Guangsheng Nie Shizhong.REFLECTION AND TRANSMISSION OF ELASTIC WAVE IN LAYERED POROUS MEDIA IMMERSED IN LIQUID[J].Journal of China University of Petroleum,1992(4). |
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| Authors: | Qiao Wenxiao Du Guangsheng Nie Shizhong |
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| Institution: | Dept. of Mathematics and Physics |
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| Abstract: | Based on the Biot theory on elastic wave propagation in fluid-saturated porous media and the boundary conditions at the porous media surface, the reflections and transmission of elastic waves in layered porous media immersed in liquid are investigated theoretically and experimentally. The deduced formulas show that the reflection and transmisson coefficients are related to the elastic wave frequency, angle of incidence, properties of porous media, such as thickness, porosity, permeability. The numerical calculation for a single layer porous media immersed in water indicates that the reflection and transmission coefficients reach extreme values at a proper ratio of thickness to elastic wave length. The conclusion has been verified by experiment. |
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| Keywords: | Acoustic wave: Porous media: Reflection: Transmission Coefficients |
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