中文摘要：

采用三极装置电测深试验，研究了不同测量电极距、无穷远电极距对测深数据的影响.试验表明，不同无穷远极距下测深数据是不同的，较小测量电极距会使测深曲线出现波动;较大测量极距会使测深数据过于圆滑而影响探测精度;非无穷远极距是测深曲线严重变形的主要因素，极大的降低了测深数据的准确性.通过电场理论及视电阻率计算公式，推导了非无穷远下的测深数据校正公式.经校正处理后的测深数据表明，在1.5AO≤BO≤5AO无穷远极距下，校正后数据准确，校正效果明显，可以应用于非无穷远时的电测深数据处理中.

英文摘要：

The effects of infinite electrode space and potential electrode space to electrical sounding data by usiing the pole-dipole array electric sounding experiment. The results show that infinite electrode space effects the sounding data,smaller potential electrode space make sounding curve fluctuations, larger potential electrode space make sounding curve too smooth to affecting the precision of detection; non-infinity corrent electrode space make sounding creves severely deformed, greatly reducing the accuracy of sounding data. Create the formula of non-infinity correction by the relationship between electric field theory and the apparent resistivity. Correction processing shows that corrected data is accurate in the condition of infinity electrode space 1.5AO≤BO≤5AO. The formula of non-infinity correction has been successfully applied to the electrical sounding data non-infinity correction processing.