层状方位各向异性介质的视电阻率计算  

APPARENT RESISTIVITY OF AZIMUTHAL ANISOTROPY LAYERED MEDIA

作　　者：阮爱国 毛桐恩[1] 阮爱国[1,2] 李清河 葛双成 

机构地区：[1]中国地震局地球物理研究所,中国北京100081 [2]中国地震局地质研究所博士后流动站,中国北京100029 [3]江苏省地震局,中国南京210014 [4]浙江省勘察研究院,中国杭州310011

出　　处：《地震学报》2002年第5期502-509,共8页Acta Seismologica Sinica

基　　金：地震科学联合基金(2001009);国家自然科学基金(40074010);科技部攻关计划项目<强地震短期预测及救灾技术研究>(2001BA601B002)共同资助;中国地震局地球物理研究所论著02AC1029.

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.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.

关 键 词：层状介质 方位各向异性 视电阻率 直流电法 物理勘探方法 

分 类 号：P631.322[天文地球—地质矿产勘探]