Water escape structure of bottom plate

The utility model provides a water escape structure of bottom plate, includes concrete cushion, the waterproof additional layer of lower floor, upper waterproof layer, upper waterproof additional layer, waterproof layer and sluicing device, the sluicing device is opened including the center has the antidumping board of hole, bottom to be higher than waterproof layer's discharge opening, the slouch that the discharge opening was inserted to the bottom and the wash -out valve that is used for shutoff discharge opening top with the hole welded fastening and top, the discharge opening is the column steel pipe, the discharge opening is equipped with the internal thread, the wash -out valve is equipped with the external screw thread that suits with the internal thread, the antidumping board is provided between waterproof additional layer of lower floor and the upper waterproof additional layer. The utility model discloses both can satisfy collecing that the infiltration surfaced on the concrete cushion, can satisfy the emission that the infiltration surfaced on the concrete cushion again, have the construction simple, remove the good advantage of drainage effect, and reduced the probability of basement bottom plate or cushion cap seepage by a wide margin.