Experimental device for developing stability of mixed filling stoping stud

The invention discloses an experimental device for developing the stability of a mixed filling stoping stud, belongs to the field of mining technology research, and particularly relates to an experimental device for researching an ore pillar mining process and a mixed filling body action mechanism established on the basis of mining of a filling mining method, which comprises a water seepage base and symmetrically arranged experimental boxes, the side edge of the experiment box body is provided with a visible window, the state of the filling body can be directly observed, the right side wall is formed by a plurality of high-strength transparent acrylic movable barrier strips, the opening can be adjusted at will to simulate the exposure area of the filling body, a feeding frame is arranged in the experiment box body, and the top of the box body is provided with a force transmission frame matched with a press machine for use. According to the invention, damage evolution processes such as loading slippage and wal