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首页> 外文会议>10th Western Pacific Acoustics Conference. >Reflection and refraction at the interface between fluid and rock with elastic-plastic deformations
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Reflection and refraction at the interface between fluid and rock with elastic-plastic deformations

机译：弹塑性变形在流体与岩石界面的反射和折射

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In the seismic exploration and ultrasonic detection, effects of stresses and plastic deformations are becoming more recognized. The statically deformed state including the elastic and plastic strains induced by stresses will influence acoustic wave velocities in rocks, and amplitudes and propagation directions at a fluid/stressed rock interface. Reflection and refraction of plane wave through an interface between fluid and rock with elastic-plastic deformations on the basis of the acoustoelastic theory for elastic-plastic materials are considered. The incident wave plane can coincide with or deviate from planes of principal stresses. More attention is focus on the effect of elastic-plastic strains on energy reflection and refraction coefficients. Changes in phase velocity, propagation direction, and energy reflection and refraction coefficients due to the presence of elasticplastic strains are discussed. The results indicate that the effects of the elastic-plastic deformations depend on the properties of unstressed rocks and the magnitudes of plastic and total static deformations.
机译：在地震勘探和超声波检测中，应力和塑性变形的影响变得越来越明显。包括应力引起的弹性和塑性应变在内的静态变形状态将影响岩石中的声波速度，以及流体/受应力岩石界面处的振幅和传播方向。根据弹塑性材料的声弹理论，考虑了平面波在弹塑性变形作用下通过流体与岩石之间的界面的反射和折射。入射波平面可以与主应力平面重合或偏离。更多的注意力集中在弹塑性应变对能量反射和折射系数的影响上。讨论了由于弹塑性应变的存在而引起的相速度，传播方向以及能量反射系数和折射系数的变化。结果表明，弹塑性变形的影响取决于无应力岩石的性质以及塑性变形和总静态变形的大小。

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