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利用边界积分方程数值模拟法对地下三维地质体的地表视电阻率响应进行研究 ,讨论了现实情况中的地形起伏及局部电性不均匀的影响及“奇异值分解”滤波法的效果 ,分析对比温纳、纵向四极及偶极—偶极 3种测深装置下的剖面计算结果 ,归纳总结了各种测深装置下的视电阻率剖面拟断面异常特征与目标体的空间几何参数对应规律。利用这种对应关系可对地下目标地质体进行大致定位。
The surface apparent resistivity response of three-dimensional underground geological body is studied by using the numerical simulation of boundary integral equation, and the effects of topographic undulation and local electrical heterogeneity and the effect of singular value decomposition filtering method are discussed. Analysis and comparison Wenna, longitudinal quadrupole and dipole-dipole three sounding devices, the paper summarizes the corresponding regularity of the anomalous characteristic of the apparent resistivity profile and the geometrical parameters of the target under various sounding devices . Using this correspondence, we can roughly locate the underground target geologic body.