Abstract: This paper introduces the basic principles, distribution and data inversion method of the high-density resistivity method. The artificial leakage with low resistance at Outang dam verified the practicality and reliability of high-density electrical method. The test results shows that the high-density resistivity method has a good detection effect for low resistivity and anomaly area, and provides a scientific basis for judgment of dam leakage.

Key words: high-density resistivity method, resistivity, inversion, Outang reservoir

摘要： 介绍了高密度电阻率法的基本原理、现场工作布置和数据反演方法，通过藕塘水库大坝人造渗漏低阻体验证了高密度电法的实用性和可靠性。试验结果表明，高密度电法对于低阻异常区具有良好的探测效果，为大坝渗漏异常判断提供了科学依据。

关键词: 高密度电法, 电阻率, 反演, 藕塘水库