Multi-field visual mining similar model experiment device

The invention discloses a multi-field visual mining similar model experimental device, which relates to the field of mechanics, heat transfer science, experiments and mining, and is of a closed structure taking an I-shaped hollow structure box body as a frame. A top port of the box body is connected with a pressurizing device and internally provided with an experiment body, and a bottom port of the box body is externally connected with a collecting device. A water passing channel is vertically drilled in the side wall of the box body and horizontally drilled with a water passing screw hole communicated with the water passing channel, and the water passing channel is connected with a water flow control device. A liquid injection device is arranged in the water channel to simulate coal gasification. A hydraulic pillow is arranged in the box body to simulate a mining layer. The box body angle control device clamps the box body to change the inclination angle of the box body. The simulation material is an in-situ