In this work, we investigate a novel application of electrical resistance tomography (ERT) to characterize key parameters that affect VI pathway evolution. Laboratory tests are performed using an intermediate scale two-dimensional sand tank. The tank is instrumented with moisture and temperature sensors.
Above: Schematic of the sand tank apparatus dimensions with reservoirs used to control water table elevation and moisture sensors installed along a vertical profile. Electrical resistance tomograhy (ERT) data was collected along a surface profile with changing saturation conditions.
Sand tank apparatus with moisture sensors and ERT instrumentation installed.
ERT inversion cross section.