Underground supporting equipment for phosphorite mining

The invention relates to the field of mineral exploitation supporting, in particular to phosphorite exploitation underground supporting equipment which comprises two mounting plates and a supporting mechanism, the supporting mechanism comprises lead screws, side plates, a first top plate and a second top plate, a lead screw array is rotatably mounted between the two mounting plates, and each lead screw is in threaded connection with a moving seat in a sleeving mode; the side plates are installed at the upper end of the movable base in a hinged mode, a movable groove is formed in one side of the first top plate in a penetrating mode, the upper ends of the side plates are installed in the movable groove in a hinged mode, and one end of the second top plate is connected with the first top plate in a hinged mode. And the first top plate and the second top plate are mounted at the upper ends of the unfolded and erected side plates in a mutual splicing and series connection manner, so that the upper end of the tunn