应用电法新装置勘探二维与三维地电体

本文通过对新装置条件下位场特征的分析,应用边界单元法及解析法的计算结果,发现当二维或三维电性不均匀体与测量电极位于背景场同一等位面时,视电阻率异常反映最明显。从而提出了圆弧交会法确定二维或三维地电体中心理深的方法,并给出了若干计算实例。结果表明,此方法简便有效且精度较高。

Using a New Configuration for Prospecting 2-D and 3-D Geoelectric Targets

In this paper, through analysimg the characters of the potential field with a new configuration, and using the calculation results with boundary element method and analytic method, we discover the phenomeno that the biggest anomaly of apparent resis- tivity will be measured when 2-D or 3-D target and potential electrodes on a same constant potential line. Thereby we put forward the method of crossing cicumferences for determining the depth of the centres of the 2-D or 3-D target, and some calcula- tion examples with the method have been given in this paper. The results indicate that the method is simple in interpretation technique and high in precision.