| 电法勘探中有覆盖层的点源二维、点源三维边界元法正演 |
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| 引用本文： | 傅良魁,陈福集.电法勘探中有覆盖层的点源二维、点源三维边界元法正演[J].现代地质,1990,4(3):89-100. |
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| 作者姓名： | 傅良魁 陈福集 |
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| 作者单位： | 中国地质大学 北京
(傅良魁)，中国地质大学 北京(陈福集) |
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| 摘 要： | 本文提出用二层介质格林函数作为余量加权函数,归化边界积分方程的边界单元法。通过对有水平覆盖层的点源二维、点源三维正演计算表明,本算法明显地优化了以往的边界元法,计算精度高,方程组规模小,节省内存空间,仅在一般微机上即可实现,扩大了边界单元法在电法勘探中的应用范围。
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| 关 键 词： | 边界元 格林函数 覆盖层 正演 |
FORWARD CALCULATION OF 2-D AND 3-D STRUCTURES WITH A COVER BY BOUNDARY ELEMENT METHOD IN THE ELECTRICAL METHODS |
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| Fu Liangkui Chen Fuji.FORWARD CALCULATION OF 2-D AND 3-D STRUCTURES WITH A COVER BY BOUNDARY ELEMENT METHOD IN THE ELECTRICAL METHODS[J].Geoscience——Journal of Graduate School,China University of Geosciences,1990,4(3):89-100. |
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| Authors: | Fu Liangkui Chen Fuji |
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| Abstract: |
This paper develops the boundary element method in which the authors employ
two-layered earth Green functions as the weighting functions of residual and derive boun-
dary integral equations. The forward problems of point sources on 2-D and 3-D structures
with a cover influencing are solved with the method and the results show that the method
markedly improves the original boundary element method. The features of the improved
method are greater numerical accuracy, the much smaller systems of equations and consi-
derable saving of the storage capacity of computer, and allow us to solve the above prob-
lems only with ordinary microcomputers. The results in the paper extends the scope of ap-
plying boundary element method in the electrical methods of geophysical prospecting. |
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| Keywords: | boundary element Green function cover forward calculation |
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