The invention provides a big-tonnage rock engineering power disaster simulation experiment system, and relates to equipment for performing experiments on big-tonnage rock. The equipment comprises a fixed base, a first base, an annular framework and a second base, wherein an upper and lower loading cylinder and a left and right loading cylinder are connected in the annular framework; a front and back loading cylinder is connected onto one side surface of the second base; each of the upper and lower loading cylinder, the left and right loading cylinder and the front and back loading cylinder comprises a static loading cylinder tube, a movable loading cylinder tube, a static loading piston rod and a movable loading piston rod; a movable loading cylinder tube installing cavity and a static loading rodless cavity are arranged in the static loading cylinder tube; the movable loading cylinder tube is arranged in a movable cylinder tube installing cavity; the static loading piston rod is arranged in the static loading rodless cavity; one end of the movable loading piston rod is provided with a movable loading piston; the movable loading piston is arranged in the movable loading cylinder tube; the other end of the movable loading piston rod penetrates through a press cover of the movable loading cylinder tube and the static loading piston rod, and is then connected with a replaceable punching head; one end, extending out of the static loading cylinder tube, of the static loading piston rod is provided with a fixing flange and a loading block. The static loading and the movable loading can be realized; the static loading and the movable loading can be also performed at the same time.