摘要
本文用加权剩余法导出点源二维地电断面的边界单元法积分方程。通过付氏反变换,可获得三维空间的电位。若干模型上正演计算结果与解析解完全一致。对实测的ρ_s曲线进行了地形攻正及选择法反演拟合,解释结果与实际地质断面符合得很好。
By using Fourier transfomation, the three-dimensional boundary value problem of two-dimensional geoelectric cross section of point source is converted to two-dimensional boundary value problem. The integrating equation of the boundary element method for solving the two-dimensional boundary value are derived by means of the weighed residue method. By using Fourier inverse transformation, we can obtain electric potential in the three-dimensional space.The comparison of the direct numerical calculation curve on the some models with the theoretical curve are made well. The results of the terrain correction and inverse interpretation are well coincided with the geological profile.
关键词
边界元法
电法勘探
傅氏反变换
boundary element method, Fourier inverse transformation, electrical prospecting
