Research Article
Groundwater Inrush Control and Parameters Optimization of Curtain Grouting Reinforcement for the Jingzhai Tunnel
Table 3
Pore permeability parameters.
| | Permeability coefficient in carbonaceous slate | | | Permeability coefficient in grouting zone | | | Porosity in carbonaceous slate | 0.33 | | Porosity in grouting zone | 0.15 | | Coefficient | 4.2 m-1 |
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