Pressure chamber for stress sealing

The invention relates to the technical field of rock mass in-situ internal stress sealing and storage, and discloses a pressure chamber for stress sealing and storage, the pressure chamber comprises a pressure chamber cylinder and a pressure chamber base, the pressure chamber cylinder is connected above the pressure chamber base, a lower pressure head is slidably arranged on the pressure chamber base, and the lower pressure head moves along the axial direction of the pressure chamber cylinder; a bottom sealing ring is fixed to the top of the pressure chamber base and abuts against the bottom face of the pressure chamber barrel in a compressed state, the upper pressing head is in a step shape, the small-diameter end of the upper pressing head faces downwards, a top sealing ring is arranged on a step of the upper pressing head, the small straight end of the upper pressing head is slidably sleeved with a pressure disc, and the pressure disc is located below the top sealing ring. And the pressure disc extrudes th