Research Article
Time-Lapse Electrical Resistivity Investigations for Imaging the Grouting Injection in Shallow Subsurface Cavities
Table 1
Time-lapse electrical resistivity monitoring and amount of grouting material.
| | Phase | Electrical resistivity measurement | Injection condition | Amount of grouting material (m3) |
| | Phase 1 (pregrouting) | Lines 1–8 | Pregrouting | 0 | | Phase 2 (during grouting) | Lines 4 and 6 | During grouting | 105 | | Phase 3 (during grouting) | Lines 4 and 6 | During grouting | 325 | | Phase 4 (during grouting) | Lines 4 and 6 | During grouting | 186 | | Phase 5 (postgrouting) | Lines 1–8 | Postgrouting | |
| | | | | Total = 616 m3 |
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