Research Article
Effects of Initial Porosity and Water Pressure on Seepage-Erosion Properties of Water Inrush in Completely Weathered Granite
Table 6
Permeability with time to each sample (unit:
− 12 m
2) (partial results).
| | Number | Water pressure (MPa) | Initial porosity | Time (min) | | 0 | 5 | 10 | 20 | 30 | 40 | 50 | 60 | 90 | 120 |
| | 1 | 0.2 | 0.36 | 0.5 | 4.1 | 5.5 | 6.2 | 6.4 | 6.2 | | | | | | 2 | 0.4 | | 0.5 | 3.4 | 4.4 | 4.5 | 4.7 | 4.3 | 6.5 | 7.5 | | | | 3 | 0.6 | | 0.5 | 1.0 | 1.8 | 8.4 | 12.1 | 14. 9 | 14.6 | 14.1 | 15.6 | | | 4 | 0.6 | 0.23 | 0.3 | 4.6 | 3.1 | 2.5 | 3.3 | 3.3 | 3.9 | 4.0 | 4.1 | 5.2 | | 5 | | 0.30 | 0.4 | 2.4 | 1.8 | 1.3 | 1.7 | 2.7 | 2.8 | 3.5 | 2.0 | 2.0 | | 6 | | 0.36 | 0.5 | 1.0 | 1.8 | 8.4 | 12.1 | 14. 9 | 14.6 | 14.1 | 15.6 | |
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