Deep rock mass in-situ internal stress simulation device for multi-environment simulation

The invention relates to the technical field of rock mass in-situ internal stress simulation, and discloses a multi-environment simulation deep rock mass in-situ internal stress simulation device, which comprises a gate-type frame, a pressure applying mechanism, a temperature simulation mechanism, a humidity simulation mechanism and a sealing mechanism, and is characterized in that the pressure applying mechanism comprises an upper pressure head, a lower pressure head, a pressure chamber barrel and a pressure chamber base; the pressure chamber base has the freedom degree of moving in the height direction of the portal frame, the lower pressing head is fixed to the pressure chamber base, the bottom of the pressure chamber barrel is open and arranged on the pressure chamber base in a sleeving mode, the pressure chamber base is connected with an oil inlet pipe, and an oil discharging valve is arranged on the side wall of the pressure chamber barrel. The two ends of the latex sleeve are respectively sleeved on th