| 高阶有限差分法管波传播数值模拟 |
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| 引用本文： | 孟庆生,樊玉清,张珂,张盟. 高阶有限差分法管波传播数值模拟[J]. 吉林大学学报(地球科学版), 2011, 41(1): 292-298 |
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| 作者姓名： | 孟庆生 樊玉清 张珂 张盟 |
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| 作者单位： | 中国海洋大学,环境科学与工程学院,山东,青岛,266100;山东省交通规划设计院,济南,250031 |
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| 基金项目： | 国家"863"计划项目，山东省交通科技项目，青岛市应用基础研究计划项目 |
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| 摘 要： | 为正确认识流体充填钻孔中管波的传播规律,首先给出均匀各向同性介质中包含流体充填钻孔条件下的弹性波动力学方程和二阶速度-应力公式及差分格式的稳定性条件和边界条件;然后利用高阶交错网格有限差分法,结合典型模型,模拟了不同时刻管波的传播快照和复杂层状介质中管波的合成地震记录,并与实际管波地震记录进行了对比。结果表明:在地层分界面、溶洞的边界等波阻抗差异界面处,管波都会产生反射;反射管波的振幅、频率特征受界面两侧的岩石物理性质差异的影响;在理论合成记录中,反射管波与直达管波同相轴的交点与理论模型中地层分界面或异常体的边界一致。
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| 关 键 词： | 勘查地球物理 交错网格 有限差分法 管波 数值模拟 |
Tube Wave Propagation Numerical Simulation Based on High Order Finite-Difference Method |
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| MENG Qing-sheng,FAN Yu-qing,ZHANG Ke,ZHANG Meng .College of Environmental Science , Engineering,Ocean University of China,Qingdao ,Sh,ong,China .Sh,ong Provincial Communications Planning , Design Institute,Jinan ,China. Tube Wave Propagation Numerical Simulation Based on High Order Finite-Difference Method[J]. Journal of Jilin Unviersity:Earth Science Edition, 2011, 41(1): 292-298 |
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| Authors: | MENG Qing-sheng FAN Yu-qing ZHANG Ke ZHANG Meng .College of Environmental Science Engineering Ocean University of China Qingdao Sh ong China .Sh ong Provincial Communications Planning Design Institute Jinan China |
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| Affiliation: | MENG Qing-sheng1,FAN Yu-qing1,ZHANG Ke2,ZHANG Meng1 1.College of Environmental Science and Engineering,Ocean University of China,Qingdao 266100,Shandong,China 2.Shandong Provincial Communications Planning and Design Institute,Jinan 250031,China |
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| Abstract: | Making use of the tube wave detection method to find geological disasters,such as karsts or corrosion cracks within a certain range around the borehole,is a new means of engineering geophysical survey.To better understand the tube wave propagation mechanism in fluid-filled boreholes,a staggered-grid finite-difference approach is applied to compute the wave propagation in homogeneous isotropic media including a fluid-filled borehole.Firstly,the wave motion equation was introduced,and the finite-difference so... |
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| Keywords: | geophysical prospecting staggered-grid finite difference method tube wave modeling |
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