Research Article
Experimental Measurement of the Transport Flow Path Aperture in Thermally Cracked Granite and the Relationship between Pore Structure and Permeability
Table 2
Summary of experimental results.
| Treated temperature | Pc | | | Pp | | Porosity | °C | MPa | MPa | μm | MPa | m2 | % |
| 400 | 5 | 0.850-0.885 | 0.103-0.107 | 0.5 | - | 1.38 | 7.5 | 1.21-1.59 | 0.0573-0.0754 | 0.75 | - | 1.32 | 10 | | | 1 | | 1.24 | 15 | | | 1.5 | | 1.13 | 20 | | | 2 | | 1.07 | 25 | | | 2.5 | | 1.02 | 30 | | | 3 | | 0.990 |
| 600 | 5 | 0.039-0.048 | 1.87-2.30 | 0.5 | - | 1.83 | 7.5 | 0.056-0.062 | 1.45-1.60 | 0.75 | - | 1.66 | 10 | 0.074-0.078 | 1.15-1.21 | 1 | - | 1.50 | 15 | 0.113-0.124 | 0.723-0.794 | 1.5 | - | 1.33 | 20 | 0.154-0.188 | 0.476-0.581 | 2 | - | 1.22 | 25 | 0.238-0.275 | 0.326-0.376 | 2.5 | - | 1.17 | 30 | 0.351-0.362 | 0.247-0.255 | 3 | - | 1.11 |
| 800 | 5 | | | 0.5 | - | 2.66 | 7.5 | 0.027-0.028 | 3.18-3.30 | 0.75 | - | 2.44 | 10 | 0.041 | 2.18 | 1 | - | 2.21 | 15 | 0.063-0.065 | 1.38-1.42 | 1.5 | - | 1.91 | 20 | 0.081-0.096 | 0.936-1.08 | 2 | - | 1.72 | 25 | 0.126-0.140 | 0.642-0.713 | 2.5 | - | 1.58 | 30 | 0.181-0.192 | 0.468-0.496 | 3 | - | 1.50 |
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Pc = confining pressure; Pp = pore pressure from the permeability measurement; = permeability; = gas breakthrough pressure; = flow path aperture. |