| 理论地质模型的声波波场数值模拟 |
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| 引用本文： | 王海,黄金辉,屈凤林,王世龙.理论地质模型的声波波场数值模拟[J].煤,2011,20(3):3-5,16. |
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| 作者姓名： | 王海 黄金辉 屈凤林 王世龙 |
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| 作者单位： | 成都理工大学地球探测与信息技术教育部重点实验室,四川成都,610059 |
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| 摘 要： | 介绍了二阶中心差分的基本理论,并由此推导出了声波方程的二阶中心差分格式以及边界条件的差分格式。建立双层理论地质模型,分别对爆炸点在介质内部和介质顶层的两种情况进行波场数值模拟,模拟出波在不同时刻传播的形态及炮集记录。同时通过对模拟出的波场图形和对应的炮集进行对比分析,得出仅采用一阶边界吸收便可快速、便捷的对均匀介质模型波场形态进行较好模拟。
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| 关 键 词： | 二阶中心差分 边界吸收条件 理论地质模型 声波数值模拟 |
The Numerical Simulation of Wave Fields for the Theoretical Geological Model |
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| WANG Hai,HUANG Jin-hui,QU Feng-lin,WANG Shi-long.The Numerical Simulation of Wave Fields for the Theoretical Geological Model[J].Coal,2011,20(3):3-5,16. |
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| Authors: | WANG Hai HUANG Jin-hui QU Feng-lin WANG Shi-long |
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| Affiliation: | (Key Lab of Earth Exploration and Information Techniques of the Ministry of Education,Chengdu University of Technology,Chengdu 610059,China) |
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| Abstract: | The paper describes the basic theory of the two-order central difference scheme,and based on this theory,it deduces the two-order central difference scheme of acoustic waves and the difference scheme of boundary condition.Build a two-deck theoretical geological model,by simulating the wave fields in the condition of explode spot in and upside the media,we can get the shape and the csp records of the wave in different time.In addition,by the comparison of the wave fields and csp record,the paper finds that just using the one-order boundary condition can simulate the form of wave fields fast and conveniently. |
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| Keywords: | two-order central difference scheme absorbing boundary condition theoretical geological model the numerical simulation of acoustic wave |
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