Geoelectrical methods for investigating mine dumps

摘要

We've used direct current resistivity (DC), electromagnetic (EM), induced polarization (IP), and ground-pentrating radar (GPR) geoelectrical methods to study mine dumps. The results reflect lithology, pore water saturation, and dissolved solids in the pore water. If the pore water ahs a pH less than 5, conductivity maps can indicate acid generating potential. IP measurements can help distinguish mineralogy in mine dumps, especially concentrations of sulfide minerals. EM and DC can help locate acidic/high TDS groundwater associated with mine dumps. GPR methods field at the sites we studied in the West. Our own conclusions are augmented by those from the recent literature.