| 摘要 |
The present invention relates to an airduct slab fixed onto a tunnel lining. Provided is a transverse ventilation type airduct slab, wherein a ventilation duct slab for ventilating inside of a tunnel is provided. The airduct slab fixed on a tunnel lining is capable of preventing collapse of a slab installed to form a duct and cracks in concrete, thereby expanding lifespan of the tunnel. According to the present invention, a transverse ventilation type is adopted, to make the tunnel be prepared with an airduct bottom slab, thus providing a structure which makes inside of the tunnel be ventilated. Also, a cross section thickness of the airduct bottom slab can be minimized to remarkably reduce necessary expenses such as costs of construction. |
