Numerical simulation of vertical shaft sinking using artificial ground freezing

Artificial ground freezing (AGF) is used worldwide for vertical shaft sinking in difficult hydrogeological conditions. The modern tendency to determine the design parameters of technique based on numerical simulation. This work devoted simulation formation an ice-soil wall soil stratum due AGF and under protection wall. For this purpose, a fully coupled thermo-hydro-mechanical model has been developed basis theory poromechanics. considers important features process, such as phase change, pore water migration cryogenic suction, frost heave, consolidation soil. results have shown that allows predict distribution ice content, assess stress strain wall, estimate displacement excavation