The invention discloses a multi-field
coupling true triaxial test
system and an experiment method implemented by the same. The multi-field
coupling true triaxial test
system is characterized by comprising a true triaxial double-
cavity pressure chamber (1), an axial loading
system (2), a confining pressure /
back pressure loading system (3), a
temperature control system (4), a
permeation control system (5), a gas loading system (6), a bending element experiment system (7) and a computer (8). The multi-field
coupling true triaxial test system and the experiment method have the advantages that stress fields and seepage fields are controlled, and accordingly
simulation research can be carried out on seepage
anisotropy of rock and
soil mass; influence of environmental factors on freezing nucleusor frozen soil samples can be simulated under the effects of temperature fields, the seepage fields and the stress fields; research can be carried out on the physical and mechanical properties of unsaturated frozen soil under the effects of the temperature fields and the stress fields;
simulation research can be carried out on change of the physical and earth properties of sediments in generationand
decomposition procedures of natural hydrates under multi-field coupling conditions, and
simulation research can be carried out on mutual displacement effects between
hydrate gas in the sediments and underground water; simulation research can be carried out on the physical and mechanical properties of unsaturated soil under the multi-field coupling conditions.