Coarse-grained soil hydraulic shear apparatus

The utility model relates to the technical field of coarse-grained soil tests, in particular to a coarse-grained soil hydraulic shear apparatus which comprises a lower shear box and an upper shear box, and the upper shear box is movably connected to the top of the lower shear box. Compared with the prior art, the sealing device has the advantages that the bottom plate is arranged and fixedly connected to the bottom of the lower shear box, and the mounting groove is formed in the bottom plate, so that when the sealing device is used, the sealing plate is moved to be positioned in the mounting groove, and is pushed to be positioned at the bottom of the lower shear box; threaded holes are formed in the sealing plate and the bottom plate, when the screws are rotated, the sealing plate and the bottom plate are fixed in the threaded holes, then the sealing plate is fixed to the bottom of the lower shear box, the bottom of the lower shear box is sealed, use is convenient, the structure is simple, and operation is co