| 软夹层介质瑞利波合并化频散曲线模拟分析 |
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| 引用本文： | 杨天春,冯建新,吴燕清.软夹层介质瑞利波合并化频散曲线模拟分析[J].煤田地质与勘探,2011,39(2):61-65. |
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| 作者姓名： | 杨天春 冯建新 吴燕清 |
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| 作者单位： | 1. 湖南科技大学土木工程学院,湖南,湘潭,411201
2. 煤炭科学研究总院重庆研究院,重庆,400037 |
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| 基金项目： | 教育部高等学校特色专业建设点项目(TS11027) |
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| 摘 要： | 针对含有软夹层介质的地质模型,研究其瑞利波合并化频散曲线随夹层厚度和埋深的变化规律,分析产生"之" 字形现象的根本原因.利用传递矩阵方法计算瑞利波多模式频散曲线,以及它们在自由表面的垂直位移强度,分别按能量最大法和相对位移权值法获得合并化的频散曲线,从而获得软夹层厚度或埋深变化的合并化频散曲线.由计算结果分析可知,两种...
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| 关 键 词： | 瑞利波 "之"字形频散 传递矩阵法 能量最大法 相对位移权值法 |
Simulation and analysis of incorporative dispersion curves of Rayleigh waves in media with a low-velocity mid-layer |
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| YANG Tianchun,FENG Jianxin,WU Yanqing.Simulation and analysis of incorporative dispersion curves of Rayleigh waves in media with a low-velocity mid-layer[J].Coal Geology & Exploration,2011,39(2):61-65. |
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| Authors: | YANG Tianchun FENG Jianxin WU Yanqing |
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| Institution: | YANG Tianchun1,FENG Jianxin1,WU Yanqing2(1.College of Civil Engineering,Hunan University of Science and Technology,Xiangtan 411201,China,2.Chongqing Research Institute,China Coal Research Institute,Chongqing 400037,China) |
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| Abstract: | The authors studied variation characteristics of incorporative dispersion curves with thickness and depth of a low-velocity mid-layer,and analyzed causes of zigzag dispersion.Multi-mode dispersion curves and their ver-tical displacements at free surface of Rayleigh waves were calculated by the transfer matrix method.Then,the au-thors obtained incorporative dispersion curves by the maximal amplitude method and the weighted displacement method respectively,and knew variation characteristics of incorporative d... |
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| Keywords: | Rayleigh waves zigzag dispersion transfer matrix method maximal amplitude method weighted displace-ment method |
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