摘要
本文以二层介质下界面上隆模型为例,讨论了用边界元法在解决层状介质中存在二维异常体情况下点源场视电阻率计算问题。文中对基本解的选取避免了对水平层状界面的积分计算,从而大大减小了所需的边界剖分点和未知量的数目,大量地节省了计算机内存,改善了计算精度,使其从解决二层介质中横向不均匀性问题推广到解决三层以上介质横向不均匀性的问题。结果表明,边界元法对本问题的研究是成功的。
In this paper ,we take the model of two layered medium in which the second layer is convex ,and discuss the application of boundary element method for calculating apparent resistivity on two-dimensional layered medium which contains inhomogeneties. The integral calculation of horizontal interface is avoided because of the selection of basic solution,thus,the number of both needed boundary cut points and unknown quantities is reduced to a large degree. So it is in favour of saving computer memory,improving calculating accurasy. This can be extended to solve the problem of multi-layered media which contains inhomogenety. The results show that the boundary element method is successful to solve this problem.
出处
《物探化探计算技术》
CAS
CSCD
1992年第1期12-19,共8页
Computing Techniques For Geophysical and Geochemical Exploration
