【摘要】 从电性各向异性的欧姆定律出发,推导了直流电法层状方位各向异性介质中的电位分布、边界条件及视电阻率计算公式.以四极对称装置系统为例,对具有相同各向异性系数的4层模型采用核函数递推法作了理论数值模拟,得到了不同方向的电阻率测深曲线及其等值线形态.结果表明理论公式是正确的,测深曲线既反映了分层介质的电阻率差异,又反映了各层中电阻率的各向异性特征.更多还原

【Abstract】 The electric field, equations of boundary conditions and calculation formula of apparent resistivity are derived for azimuthal anisotropy layered media with DC method based on anisotropic Ohm’s law. Taking Schlumbergor symmetric system as an example and using recurrence formula of nuclear function, the paper theoretically simulates a model of four layers with the same anisotropy coefficient for each layer. The deep sounding curves of resistivity and the pattern of contours are obtained i’or the model. The results shows the theoretical formula of this paper is correct, the deep sounding curves not only exhibit the difference of resistivity among layers but also indicate the anisotropy characteristics of layers.更多还原