Low permeability rock gas permeation test device and method under air and heat coupling effect

The invention belongs to the field of deep oil and gas exploitation rock mechanical testing, and particularly relates to a low permeability rock gas permeation test device and method under air and heat coupling effect. The test device comprises a triaxial pressure chamber, a high-pressure tank, a low-pressure tank, a confining pressure loader, an axial pressure loader, a temperature heater and a data transmission and acquisition processor; the high-pressure tank, the low-pressure tank, the confining pressure loader and the axial pressure loader are respectively connected with the triaxial pressure chamber, so as to realize gas pressure application and loading of different stress ways and different stress paths; the temperature heater is clung to the triaxial pressure chamber and seamlessly surrounds the triaxial pressure chamber, so as to realize test temperature control; the data transmission and acquisition processor is connected with the triaxial pressure chamber, the high-pressure tank, the low-pressure tank, the confining pressure loader, the axial pressure loader and the temperature heater respectively, acquires test data periodically, and stores and processes the data. The test device and method have the beneficial effect of realizing low permeability rock gas permeability tests with different temperatures and different stress loading paths.