Multi-angle axial pressure variable rock shear test device and test method

The invention relates to a multi-angle axial pressure variable rock shear test device and test method, and relates to the field of mechanics and experiments, and the multi-angle axial pressure variable rock shear test device comprises an angle control device, a clamping device, a loading device, a tension and compression sensor and a balance spring. The angle control device comprises an upper chassis, a lower chassis, an upper angle scale, a lower angle scale and a clamping piece. An arc-shaped stand column with a triangular prism hole in the top end is arranged at the top of the base plate, through triangular prism holes are evenly distributed in the angle scale, and the angle with he fixing device is adjusted through triangular-prism-shaped clamping pieces. The clamping device comprisesan outer sleeve, an annular gasket, an inner sleeve, a closed rubber ring and a stress application bolt set. The stress application bolt set applies axial tension and compression stress to a rock testpiece arranged in the inn