Granular soil shear flow test system

The invention relates to a granular soil shear flow test system. The test system comprises a shear test device, an image pickup device and a data acquisition device, etc. Specifically, the shear test device is the main part of the test system, is mainly composed of a deceleration motor, a dynamic torque sensor and a shear box, etc, and can realize shear flow of granules. Test data can realize automatic acquisition and display through cooperation of a data acquisition card with a computer terminal, and the image pickup device achieves the whole-course image acquisition of a shear flow process. Compared with the prior art, the test system provided by the invention can realize shear flow of granular soil under a high shear rate, and can acquire the mechanical behavior of granules under different test conditions (volume fraction and boundary conditions, etc) and in shear flow processes at different shear rates. Also, the shear box involved in the system has good sealing performance overall, can carry out shear fl