Research Article
Finite Element Analysis of Surrounding Rock with a Thermal Insulation Layer in a Deep Mine
| | Parameters | Scheme 1 | Scheme 2 | Scheme 3 | Unit |
| | Conductivity coefficient of stratum (λ) | 2.64 | 2.64 | 2.64 | W/(m·°C) | | Thermal diffusivity of stratum (a) | 1.13 | 1.13 | 1.13 | 10−6 (m2/s) | | Conductivity coefficient of the concrete layer (λ) | None | 1.51 | 1.51 | W/(m·°C) | | Thermal diffusivity of the concrete layer (a) | None | 0.7136 | 0.7136 | 10−6 (m2/s) | | Thickness of concrete layer (L) | None | 0.1 | 0.1 | m | | Conductivity coefficient of insulation layer (λ) | 2.64 | 0.76 | 0.23 | W/(m·°C) | | Thermal diffusivity of insulation layer (a) | 1.13 | 0.4825 | 0.4319 | 10−6 (m2/s) | | Insulating material | None | Lime gypsum mortar | Coalgangue block + Expanded perlite | None | | Insulation layer thickness (L) | None | 0.18 | 0.18 | m |
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