Coal mine fault visualization experiment device in three-dimensional stress state

The invention discloses a coal mine fault visualization experiment device in a three-dimensional stress state, and the device comprises a preparation box which is used for preparing a fault sample; lateral loading mechanisms are respectively mounted on the left side wall and the right side wall of the experiment box, and vertical loading mechanisms are respectively mounted on the lower side wall and the upper side wall of the experiment box; the first baffles are used for being attached to the left side face and the right side face of the fault sample respectively, and the outer side faces of the first baffles are used for being loaded by a lateral loading mechanism. The second baffle is used for being attached to the lower side face of the fault sample, and the outer side face of the second baffle is used for being loaded under the action of the vertical loading mechanism on the lower side; the third baffle is used for being attached to the upper side face of the fault sample, and the outer side face of the