On-site in-situ triaxial consolidation drainage and consolidation non-drainage shearing device

At least two sets of fluid cylinders perpendicular to the axis are evenly distributed in the circumferential direction of a cylinder body, a friction plate is connected with piston rods of the fluid cylinders, and a connecting hole connected with a drill rod and a fluid inlet and outlet hole communicated with the fluid cylinders are formed in the top end of the cylinder body. The friction plate is provided with an annular groove I for fixing the permeable stone, annular tables are arranged on the two sides of the friction plate respectively, embedding holes for embedding the pore water pressure gauges are formed in the outer circumferences of the annular tables, threading holes I communicated with the embedding holes are formed in the top end of the friction plate, cables of the pore water pressure gauges penetrate through the threading holes I, and permeable holes communicated with the permeable stone are further formed in the two ends of the friction plate. The fluid cylinder pushes the friction plate to pe