Abstract: To explore the mechanical properties of glazed hollow beads-cement/sodium silicate grouting material as thermal insulation supporting under high-temperature hydrothermal coupling curing and surrounding rock combination. The triaxial compressive and creep tests of the grouting material-rock combination were carried out at 3 hydrothermal coupling curing temperatures (20 ℃, 40 ℃, 60 ℃) and 4 interface inclination angles (0°, 30°, 60°, 90°). The results show that with the increase of the hydrothermal coupling curing temperature, the triaxial compressive strength of the combination decreases, but the total creep time and creep strain increase. Microscopic analysis reveals that elevated temperatures reduce ettringite formation and loosen the microstructure, thereby enhancing interfacial ductility and contributing to increased creep behavior. With the increase of the interface inclination angle, the triaxial compressive strength of the combination first decreases and then increases, and the strength is the lowest when the angle is 60°. The creep stress-strain curves of each combination show 3 stages, including deceleration creep, constant velocity creep, and acceleration creep. The creep strength is less than the triaxial compressive strength. Taking the hydrothermal coupling curing temperature of 60℃ as an example, the long-term strength of the combination with different interface inclination angles was obatined. The instantaneous strain increases linearly with the increase of loading stress level, and the stability is the worst when the angle is 60°. The creep strain and steady-state creep rate increased in a fluctuating manner with the loading stress level, and surged at the last stage of dead-load stress, indicating that the combination was about to fail. Based on the experimental results, the parameters of Burgers creep model were used for indentification, and the theoretical curves obtained were in good agreement with the experimental data.