Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

We have carried out comprehensive field surveys involving various hydrogeological and geophysical methods at Sandong reservoir dike in Kurye, Cheollanamdo to appraise the applicability of these methods to the leakage problem. The methods to be executed in field are electrical resistivity survey using dipole-dipole array, tracer test, slug test, temperature logging, the estimation of drawdown and leakage by discharge of reservoir water, and self-potential method. We have classified leakage pattern of Sandong reservoir dike to the leakage through the abutment, and concluded to support this leakage pattern by various surveys. The analysis of SP sources suggests that the streaming potential driven from leakage through dike is by far the most predominant over the other sources. The usefulness of the SP method is obvious for detecting and delineating leakage zones of dike, especially in the cases of showing large anomalies due to strong sources of leakage.