Research Article
Investigation of Multiple Hole Grouting for Reducing Water Inrush Risk in Underground Engineering
Table 2
Proportion of water yield and volume of grout injected.
| Aquifer | Water exit points | Water yield (m3/h) | Volume of grout injected (tons) | No. | Proportion (%) | Water yield | Proportion (%) | Single hole | Volume of grout | Proportion (%) | Single hole |
| L8 | 191 | 55.04 | 5134 | 47.20 | 26.9 | 8816 | 45.26 | 114.5 | L10 | 133 | 38.33 | 4966 | 45.66 | 37.3 | 9229 | 47.38 | 124.7 | L11 | 23 | 6.63 | 777 | 7.14 | 33.8 | 1432 | 7.35 | 79.6 | Total | 347 | 100.00 | 10877 | 100.00 | 31.3 | 19476.4 | 100.00 | 115.2 |
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