摘要
本文用边界单元法进行复杂地电条件下点源三维电阻率模拟,与以往的边界单元法模拟相比较,本方法有两个主要特点:1)可以模拟多个不均匀体的复杂地电断面;2)在积分方程中消去了位的法向导数,积分方程的形式更为简单,所需的计算机内存比原来方法减少至四分之一,计算速度相应提高一倍。互易性检验表明本方法的计算误差小于0.01％,与有限元法对比的差异为3.7％。本文还与水槽模型实验结果进行了对比,两者符合较好。
Using boundary element method, we can model the resistivity with point source on three-dimensional arbitrary nonhomogeneous geoelectrical section. Compared with the boundary element method published before, the method proposed in this paper has two main features: 1) Many inhomogenetic bodies can be modeled; 2) the normal derivative of potential has been canceled from the integral equation, the form of which is more simple, so less memory in computer and less computing time are required for this method. We have tested the accuracy of this method by reciprocity theorem and by comparing with the finite element method, and the agreement is satisfactory. we have also tested the results by water tank models, and the approaches calculated by this method are coincident with the observed values.
出处
《物探化探计算技术》
CAS
CSCD
1991年第1期13-20,共8页
Computing Techniques For Geophysical and Geochemical Exploration
