Rock direct shear apparatus and test method

The invention relates to the technical field of improvement of rock mechanics test instruments, in particular to a rock direct shear apparatus and a test method.The rock direct shear apparatus comprises a counter-force frame, a transverse loading system, a normal loading system, an upper shear box, a lower shear box, a pressure bearing system, a monitoring system, a control system and a saturated sample loading system; load bearing, sample loading, pressure saturation and loading shearing of a to-be-sheared sample are achieved, and real-time monitoring and data collection of shear face heat energy changes, micro-seismic fracture conditions, crack evolution processes and displacement of the lower half portion of the to-be-sheared sample in the loading process are achieved. The structure can obtain the relationship among micro-seismic fracture signals, stress, strain and energy in the shearing process of a large-size natural/saturated rock sample, monitors the energy dissipation condition in the shearing proces