The utility model discloses a fast tunneling device for broken roofs, which relates to the technical field of tunneling devices and comprises a draw-off pump, a draw-off
pipe is fixedly mounted on one side of the draw-off pump, a
storage tank is fixedly mounted on one side of the draw-off
pipe, and a diverter valve is fixedly mounted at the top of the draw-off pump. Flow dividing pipes are fixedly mounted in the two sides of the flow dividing valve, cross valves are fixedly mounted at the tops of the flow dividing pipes, and conveying pipes are fixedly mounted in the two sides and the top of each cross valve. According to the rapid tunneling device for the broken roof, chemical liquid in the
storage tank can be pumped out through the draw-off pump and the draw-off
pipe and then fed into the flow dividing valve, the liquid can be fed into the cross valve through the two flow dividing pipes after being divided through the flow dividing valve, and the liquid is fed into the spray head through the three conveying pipes after being divided through the cross valve; and finally, liquid can be sprayed out through a spray head, so that grouting reinforcement can be conducted on the broken top plate, and the broken top plate can be supported through a supporting plate.