Visual rock plate dynamic fracture experiment device and monitoring method

The invention provides a visual rock plate dynamic fracture experiment device and a monitoring method. The device comprises an outer kettle body, an image acquisition assembly, a confining pressure loading assembly and a fluid injection pump, a closed cylindrical space is formed in the outer kettle body, the top of the outer kettle body is transparent, a sample seat for placing a sample is arranged in the cylindrical space, and a liquid injection hole is formed in the bottom of the sample seat; the image acquisition assembly is arranged above the outer kettle body along the axial direction and is used for acquiring a dynamic image of a sample in the outer kettle body in a fracture process; the confining pressure loading assembly applies loads to the sample in the X direction, the Y direction and the Z direction in the same plane. The fluid injection pump is connected with the liquid injection hole through a pipeline and is used for injecting liquid into the sample from the bottom. According to the method, the