Time-Lapse Electrical Resistivity Investigations for Imaging the Grouting Injection in Shallow Subsurface Cavities
Figure 4
Electrical resistivity results at the pregrouting injection stage: (a) inverted 2D electrical resistivity of line 4; (b) inverted 2D electrical resistivity of line 6; (c) 3D electrical resistivity distribution at the test site; the cavities are located in the north side of the study area.
