Fireproof plate special for top of tunnel

The invention belongs to the technical field of fireproof materials, and particularly relates to a fireproof plate special for the top of a tunnel. According to the fireproof plate special for the topof the tunnel, the composite material is prepared from the following raw materials in parts by weight: 24.5 to 30.5 parts of magnesium oxide, 15 to 19 parts of magnesium sulfate, 24.2 to 30.2 parts of thermal insulation material, 0.16 to 0.24 part of non-woven fabric, 1.7 to 2.1 parts of glass fiber cloth, 0.45 to 0.55 part of glass fiber, 0.08 to 0.12 part of trace substance and 38 to 42 parts of water. The fireproof plate has very excellent fireproof and heat-insulating properties, temperature resistance of 1500 DEG C, the density of the plate is about 1.05 t/m < 3 >, the thickness of the fireproof plate is 30mm, the temperature of the fireproof plate is 1350 DEG C after the fireproof plate is fired, the plate does not crack, heat energy transmission is blocked, it is guaranteed that the temperature of the back