Research Article
Investigation of Multiple Hole Grouting for Reducing Water Inrush Risk in Underground Engineering
Table 1
Classification of evaluation methods of grouting effect.
| Method | Remarks |
| Analytical | P-Q-t curve | Distribution of quantity of grouting injected | Water inflow correlation | Rate of filling with grout |
| Inspection of borehole | Observations | Coring | Permeability coefficient test |
| Excavation sampling | Grouting mechanism analysis | Mechanical test |
| Displacement estimation | Water level predictions | Deformation predictions |
| Geophysical prospecting | Gravitational prospecting | Magnetic prospecting | Electrical prospecting | Seismic prospecting | Radioactivity prospecting | Geothermal prospecting |
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