Apron in escape canal in tunnel

The utility model relates to an apron technical field, concretely relates to apron in escape canal in tunnel. This its thickness of apron be 2 -3 centimetre, and the setting link up the more than one air vent on the upper and lower surface of apron. Through the shaping of prepareeing material, stirring, vibrating, just support, support eventually and obtain escape canal apron in the tunnel. The lid plate thickness drops to 2 -3 centimetre by 6 centimetres of prior art, the attenuation, the use amount of concrete obviously reduces, and holistic weight becomes light. But, high speed train moves in the tunnel and produces the air negative pressure, and the apron after weight reduces is siphoned away easily, to this kind of condition, has set up the air vent that link up the upper and lower surface of apron on the apron, makes the inside and outside air UNICOM in escape canal, effectively reduces the air negative pressure.