英文摘要 |
The electrical resistivity tomography technique is a geophysical inspection method widely used for several investigations, such as mining exploration, fault localization, groundwater flow, geological exploration, and pollution zones. Infusing brine into substructure can increase conductivity and becomes a useful medium to trace the path of the seepage flowing in rockfill dams. In this article, an elapsed-time electrical resistivity tomography technique was developed to monitor the potential seepage in the damaged dam slopes nearby a concrete spillway. Tracing the downhole brine seepage could effectively identify the possible direction and path of the seepage flowing through the rockfill dam mass in a few hours. The spatial distribution variations of electrical resistivity tomography images can also provide information about the potential sliding surface and the accumulation zones of the seepage in the downstream side slope of the dam. |