Pouring device for top longitudinal beam in pilot tunnel of PBA subway station

The utility model discloses a pouring device for a top longitudinal beam in a pilot tunnel of a PBA subway station. The lower end of the bottom supporting device abuts against the bottom of the pilottunnel. A plugging device is arranged at the upper end of the bottom supporting device, a containing cavity parallel to the extending direction of the pilot tunnel is formed in the plugging device, areinforcement cage is arranged in the containing cavity, an upper guide pipe and a lower guide pipe are fixed in the reinforcement cage, the upper guide pipe is located over the lower guide pipe, andthe lower guide pipe is longer than the upper guide pipe. The problem that in the prior art, constructors cannot pour a top longitudinal beam in the limited space of a pilot tunnel is solved. The method has the advantages that a long-short pipe pouring method is adopted, and top longitudinal beam concrete is smoothly poured on the premise that the excavation area of the pilot tunnel is not enlarged; the problem that constru