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Thermo-hydro-mechanical response of a partially sealed circular tunnel in saturated rock under inner water pressure
Highlights The fully coupling thermo-hydro-elastodynamic model is established based on generalized thermoelastic theory. The propagation of thermoelastic wave in porous media at finite velocity can be realized by introducing three relaxation times. The stress coefficient in the interface between lining and soil is established.
Abstract The thermo-hydro-mechanical response of a partially sealed circular tunnel in saturated rock subject to inner water pressure with high temperature is investigated by the fully coupling thermo-hydro-mechanical model. The tunnel is assumed to be partially sealed, and the partially permeable condition of the boundary of tunnel is established using the Darcy’ law. Furthermore, a stress coefficient depending on the volume fraction of the pore fluid is quoted to establish the stress coordination conditions at the boundary of tunnel, and the solutions of temperature increment, displacement, pore water pressure and stress are obtained in the domain of Laplace transform. Based on the Crump method taking inverse Laplace transform, the numerical solution to the problem is presented. Numerical results are displayed graphically and analyzed in detail.
Thermo-hydro-mechanical response of a partially sealed circular tunnel in saturated rock under inner water pressure
Highlights The fully coupling thermo-hydro-elastodynamic model is established based on generalized thermoelastic theory. The propagation of thermoelastic wave in porous media at finite velocity can be realized by introducing three relaxation times. The stress coefficient in the interface between lining and soil is established.
Abstract The thermo-hydro-mechanical response of a partially sealed circular tunnel in saturated rock subject to inner water pressure with high temperature is investigated by the fully coupling thermo-hydro-mechanical model. The tunnel is assumed to be partially sealed, and the partially permeable condition of the boundary of tunnel is established using the Darcy’ law. Furthermore, a stress coefficient depending on the volume fraction of the pore fluid is quoted to establish the stress coordination conditions at the boundary of tunnel, and the solutions of temperature increment, displacement, pore water pressure and stress are obtained in the domain of Laplace transform. Based on the Crump method taking inverse Laplace transform, the numerical solution to the problem is presented. Numerical results are displayed graphically and analyzed in detail.
Thermo-hydro-mechanical response of a partially sealed circular tunnel in saturated rock under inner water pressure
Wen, Minjie (author) / Xiong, Houren (author) / Xu, Jinming (author)
2022-04-12
Article (Journal)
Electronic Resource
English
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